diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/constants.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/constants.js
index f601df39d61397..1edd5915eaf87d 100644
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/constants.js
+++ b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/constants.js
@@ -51,16 +51,6 @@ export const TEMPLATES_POSTS_PREFIXES = [
 
 export const TEMPLATES_PAGES_PREFIXES = [ 'page-' ];
 
-export const TEMPLATES_NEW_OPTIONS = [
-	'front-page',
-	'single-post',
-	'page',
-	'archive',
-	'search',
-	'404',
-	'index',
-];
-
 export const TEMPLATE_OVERRIDES = {
 	singular: [ 'single', 'page' ],
 	index: [ 'archive', '404', 'search', 'singular', 'home' ],
@@ -68,9 +58,6 @@ export const TEMPLATE_OVERRIDES = {
 };
 
 export const MENU_ROOT = 'root';
-export const MENU_CONTENT_CATEGORIES = 'content-categories';
-export const MENU_CONTENT_PAGES = 'content-pages';
-export const MENU_CONTENT_POSTS = 'content-posts';
 export const MENU_TEMPLATE_PARTS = 'template-parts';
 export const MENU_TEMPLATES = 'templates';
 export const MENU_TEMPLATES_GENERAL = 'templates-general';
@@ -78,8 +65,6 @@ export const MENU_TEMPLATES_PAGES = 'templates-pages';
 export const MENU_TEMPLATES_POSTS = 'templates-posts';
 export const MENU_TEMPLATES_UNUSED = 'templates-unused';
 
-export const SEARCH_DEBOUNCE_IN_MS = 75;
-
 export const MENU_TEMPLATE_PARTS_HEADERS = 'template-parts-headers';
 export const MENU_TEMPLATE_PARTS_FOOTERS = 'template-parts-footers';
 export const MENU_TEMPLATE_PARTS_SIDEBARS = 'template-parts-sidebars';
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/content-navigation-item.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/content-navigation-item.js
deleted file mode 100644
index 43f460f26e367e..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/content-navigation-item.js
+++ /dev/null
@@ -1,89 +0,0 @@
-/**
- * WordPress dependencies
- */
-import { __experimentalNavigationItem as NavigationItem } from '@wordpress/components';
-import { useDispatch, useSelect } from '@wordpress/data';
-import { useCallback, useState } from '@wordpress/element';
-import { __ } from '@wordpress/i18n';
-import { getPathAndQueryString } from '@wordpress/url';
-import { store as coreStore } from '@wordpress/core-data';
-
-/**
- * Internal dependencies
- */
-import { NavigationPanelPreviewFill } from '..';
-import TemplatePreview from './template-preview';
-import { store as editSiteStore } from '../../../store';
-
-const getTitle = ( entity ) => {
-	const title = entity.taxonomy ? entity.name : entity?.title?.rendered;
-
-	// Make sure encoded characters are displayed as the characters they represent.
-	const titleElement = document.createElement( 'div' );
-	titleElement.innerHTML = title;
-
-	return titleElement.textContent || titleElement.innerText || '';
-};
-
-export default function ContentNavigationItem( { item } ) {
-	const [ isPreviewVisible, setIsPreviewVisible ] = useState( false );
-	const previewContent = useSelect(
-		( select ) => {
-			if ( ! isPreviewVisible ) {
-				return null;
-			}
-
-			const template = select(
-				coreStore
-			).__experimentalGetTemplateForLink( item.link );
-			return template?.content;
-		},
-		[ isPreviewVisible ]
-	);
-	const { setPage, setIsNavigationPanelOpened } = useDispatch(
-		editSiteStore
-	);
-
-	const onActivateItem = useCallback( () => {
-		const { type, slug, link, id } = item;
-		setPage( {
-			type,
-			slug,
-			path: getPathAndQueryString( link ),
-			context: {
-				postType: type,
-				postId: id,
-			},
-		} );
-		setIsNavigationPanelOpened( false );
-	}, [ setPage, item ] );
-
-	if ( ! item ) {
-		return null;
-	}
-
-	return (
-		<>
-			<NavigationItem
-				className="edit-site-navigation-panel__content-item"
-				item={ `${ item.taxonomy || item.type }-${ item.id }` }
-				title={ getTitle( item ) || __( '(no title)' ) }
-				onClick={ onActivateItem }
-				onMouseEnter={ () => setIsPreviewVisible( true ) }
-				onMouseLeave={ () => setIsPreviewVisible( false ) }
-			/>
-
-			{ isPreviewVisible && previewContent && (
-				<NavigationPanelPreviewFill>
-					<TemplatePreview
-						rawContent={ previewContent }
-						blockContext={ {
-							postType: item.type,
-							postId: item.id,
-						} }
-					/>
-				</NavigationPanelPreviewFill>
-			) }
-		</>
-	);
-}
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/content-categories.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/content-categories.js
deleted file mode 100644
index 8d99cf475012c6..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/content-categories.js
+++ /dev/null
@@ -1,85 +0,0 @@
-/**
- * WordPress dependencies
- */
-import {
-	__experimentalNavigationMenu as NavigationMenu,
-	__experimentalNavigationItem as NavigationItem,
-} from '@wordpress/components';
-import { __ } from '@wordpress/i18n';
-import { useSelect } from '@wordpress/data';
-import { store as coreStore } from '@wordpress/core-data';
-
-/**
- * Internal dependencies
- */
-import { MENU_CONTENT_CATEGORIES, MENU_ROOT } from '../constants';
-import ContentNavigationItem from '../content-navigation-item';
-import SearchResults from '../search-results';
-import useDebouncedSearch from '../use-debounced-search';
-
-export default function ContentCategoriesMenu() {
-	const {
-		search,
-		searchQuery,
-		onSearch,
-		isDebouncing,
-	} = useDebouncedSearch();
-
-	const { categories, isResolved } = useSelect(
-		( select ) => {
-			const { getEntityRecords, hasFinishedResolution } = select(
-				coreStore
-			);
-			const query = searchQuery
-				? {
-						search: searchQuery,
-				  }
-				: undefined;
-			const getEntityRecordsArgs = [ 'taxonomy', 'category', query ];
-			const hasResolvedPosts = hasFinishedResolution(
-				'getEntityRecords',
-				getEntityRecordsArgs
-			);
-			return {
-				categories: getEntityRecords( ...getEntityRecordsArgs ),
-				isResolved: hasResolvedPosts,
-			};
-		},
-		[ searchQuery ]
-	);
-
-	const shouldShowLoadingForDebouncing = search && isDebouncing;
-	const showLoading = ! isResolved || shouldShowLoadingForDebouncing;
-
-	return (
-		<NavigationMenu
-			menu={ MENU_CONTENT_CATEGORIES }
-			title={ __( 'Categories' ) }
-			parentMenu={ MENU_ROOT }
-			hasSearch={ true }
-			onSearch={ onSearch }
-			search={ search }
-			isSearchDebouncing={ isDebouncing || ! isResolved }
-		>
-			{ search && ! isDebouncing && (
-				<SearchResults
-					items={ categories }
-					search={ search }
-					disableFilter
-				/>
-			) }
-
-			{ ! search &&
-				categories?.map( ( category ) => (
-					<ContentNavigationItem
-						item={ category }
-						key={ `${ category.taxonomy }-${ category.id }` }
-					/>
-				) ) }
-
-			{ showLoading && (
-				<NavigationItem title={ __( 'Loading…' ) } isText />
-			) }
-		</NavigationMenu>
-	);
-}
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/content-pages.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/content-pages.js
deleted file mode 100644
index bb927f44507f13..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/content-pages.js
+++ /dev/null
@@ -1,85 +0,0 @@
-/**
- * WordPress dependencies
- */
-import {
-	__experimentalNavigationMenu as NavigationMenu,
-	__experimentalNavigationItem as NavigationItem,
-} from '@wordpress/components';
-import { __ } from '@wordpress/i18n';
-import { useSelect } from '@wordpress/data';
-import { store as coreStore } from '@wordpress/core-data';
-
-/**
- * Internal dependencies
- */
-import { MENU_CONTENT_PAGES, MENU_ROOT } from '../constants';
-import ContentNavigationItem from '../content-navigation-item';
-import SearchResults from '../search-results';
-import useDebouncedSearch from '../use-debounced-search';
-
-export default function ContentPagesMenu() {
-	const {
-		search,
-		searchQuery,
-		onSearch,
-		isDebouncing,
-	} = useDebouncedSearch();
-
-	const { pages, isResolved } = useSelect(
-		( select ) => {
-			const { getEntityRecords, hasFinishedResolution } = select(
-				coreStore
-			);
-			const query = searchQuery
-				? {
-						search: searchQuery,
-				  }
-				: undefined;
-			const getEntityRecordsArgs = [ 'postType', 'page', query ];
-			const hasResolvedPosts = hasFinishedResolution(
-				'getEntityRecords',
-				getEntityRecordsArgs
-			);
-			return {
-				pages: getEntityRecords( ...getEntityRecordsArgs ),
-				isResolved: hasResolvedPosts,
-			};
-		},
-		[ searchQuery ]
-	);
-
-	const shouldShowLoadingForDebouncing = search && isDebouncing;
-	const showLoading = ! isResolved || shouldShowLoadingForDebouncing;
-
-	return (
-		<NavigationMenu
-			menu={ MENU_CONTENT_PAGES }
-			title={ __( 'Pages' ) }
-			parentMenu={ MENU_ROOT }
-			hasSearch={ true }
-			onSearch={ onSearch }
-			search={ search }
-			isSearchDebouncing={ isDebouncing || ! isResolved }
-		>
-			{ search && ! isDebouncing && (
-				<SearchResults
-					items={ pages }
-					search={ search }
-					disableFilter
-				/>
-			) }
-
-			{ ! search &&
-				pages?.map( ( page ) => (
-					<ContentNavigationItem
-						item={ page }
-						key={ `${ page.type }-${ page.id }` }
-					/>
-				) ) }
-
-			{ showLoading && (
-				<NavigationItem title={ __( 'Loading…' ) } isText />
-			) }
-		</NavigationMenu>
-	);
-}
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/content-posts.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/content-posts.js
deleted file mode 100644
index c1593627ffebec..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/content-posts.js
+++ /dev/null
@@ -1,117 +0,0 @@
-/**
- * WordPress dependencies
- */
-import {
-	__experimentalNavigationMenu as NavigationMenu,
-	__experimentalNavigationItem as NavigationItem,
-} from '@wordpress/components';
-import { __ } from '@wordpress/i18n';
-import { useCallback } from '@wordpress/element';
-import { useDispatch, useSelect } from '@wordpress/data';
-import { store as coreStore } from '@wordpress/core-data';
-
-/**
- * Internal dependencies
- */
-import { MENU_CONTENT_POSTS, MENU_ROOT } from '../constants';
-import ContentNavigationItem from '../content-navigation-item';
-import SearchResults from '../search-results';
-import useDebouncedSearch from '../use-debounced-search';
-import { store as editSiteStore } from '../../../../store';
-
-export default function ContentPostsMenu() {
-	const {
-		search,
-		searchQuery,
-		onSearch,
-		isDebouncing,
-	} = useDebouncedSearch();
-
-	const { posts, showOnFront, isResolved } = useSelect(
-		( select ) => {
-			const {
-				getEntityRecords,
-				getEditedEntityRecord,
-				hasFinishedResolution,
-			} = select( coreStore );
-			const query = searchQuery
-				? {
-						search: searchQuery,
-				  }
-				: undefined;
-			const getEntityRecodsArgs = [ 'postType', 'post', query ];
-			const hasResolvedPosts = hasFinishedResolution(
-				'getEntityRecords',
-				getEntityRecodsArgs
-			);
-			return {
-				posts: getEntityRecords( ...getEntityRecodsArgs ),
-				isResolved: hasResolvedPosts,
-				showOnFront: getEditedEntityRecord( 'root', 'site' )
-					.show_on_front,
-			};
-		},
-		[ searchQuery ]
-	);
-
-	const { setPage, setIsNavigationPanelOpened } = useDispatch(
-		editSiteStore
-	);
-
-	const onActivateFrontItem = useCallback( () => {
-		setPage( {
-			type: 'page',
-			path: '/',
-			context: {
-				queryContext: { page: 1 },
-			},
-		} );
-		setIsNavigationPanelOpened( false );
-	}, [ setPage, setIsNavigationPanelOpened ] );
-
-	const shouldShowLoadingForDebouncing = search && isDebouncing;
-	const showLoading = ! isResolved || shouldShowLoadingForDebouncing;
-
-	return (
-		<NavigationMenu
-			menu={ MENU_CONTENT_POSTS }
-			title={ __( 'Posts' ) }
-			parentMenu={ MENU_ROOT }
-			hasSearch={ true }
-			onSearch={ onSearch }
-			search={ search }
-			isSearchDebouncing={ isDebouncing || ! isResolved }
-		>
-			{ search && ! isDebouncing && (
-				<SearchResults
-					items={ posts }
-					search={ search }
-					disableFilter
-				/>
-			) }
-
-			{ ! search && (
-				<>
-					{ showOnFront === 'posts' && (
-						<NavigationItem
-							item={ 'post-/' }
-							title={ __( 'All Posts' ) }
-							onClick={ onActivateFrontItem }
-						/>
-					) }
-
-					{ posts?.map( ( post ) => (
-						<ContentNavigationItem
-							item={ post }
-							key={ `${ post.type }-${ post.id }` }
-						/>
-					) ) }
-				</>
-			) }
-
-			{ showLoading && (
-				<NavigationItem title={ __( 'Loading…' ) } isText />
-			) }
-		</NavigationMenu>
-	);
-}
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/index.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/index.js
deleted file mode 100644
index 1a1c6988e38650..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/index.js
+++ /dev/null
@@ -1,61 +0,0 @@
-/**
- * WordPress dependencies
- */
-import {
-	__experimentalNavigationGroup as NavigationGroup,
-	__experimentalNavigationItem as NavigationItem,
-	__experimentalNavigationMenu as NavigationMenu,
-} from '@wordpress/components';
-import { __ } from '@wordpress/i18n';
-
-/**
- * Internal dependencies
- */
-import {
-	MENU_TEMPLATES,
-	MENU_TEMPLATE_PARTS,
-	MENU_CONTENT_CATEGORIES,
-	MENU_CONTENT_PAGES,
-	MENU_CONTENT_POSTS,
-} from '../constants';
-import ContentPagesMenu from './content-pages';
-import ContentCategoriesMenu from './content-categories';
-import ContentPostsMenu from './content-posts';
-import TemplatesMenu from './templates';
-import TemplatePartsMenu from './template-parts';
-
-export default function SiteMenu() {
-	return (
-		<NavigationMenu>
-			<NavigationGroup title={ __( 'Theme' ) }>
-				<NavigationItem
-					title={ __( 'Templates' ) }
-					navigateToMenu={ MENU_TEMPLATES }
-				/>
-				<NavigationItem
-					title={ __( 'Template Parts' ) }
-					navigateToMenu={ MENU_TEMPLATE_PARTS }
-				/>
-			</NavigationGroup>
-			<NavigationGroup title={ __( 'Content' ) }>
-				<NavigationItem
-					title={ __( 'Pages' ) }
-					navigateToMenu={ MENU_CONTENT_PAGES }
-				/>
-				<NavigationItem
-					title={ __( 'Categories' ) }
-					navigateToMenu={ MENU_CONTENT_CATEGORIES }
-				/>
-				<NavigationItem
-					title={ __( 'Posts' ) }
-					navigateToMenu={ MENU_CONTENT_POSTS }
-				/>
-			</NavigationGroup>
-			<TemplatesMenu />
-			<TemplatePartsMenu />
-			<ContentPagesMenu />
-			<ContentCategoriesMenu />
-			<ContentPostsMenu />
-		</NavigationMenu>
-	);
-}
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/template-parts-sub.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/template-parts-sub.js
deleted file mode 100644
index 88252d4ba618ba..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/template-parts-sub.js
+++ /dev/null
@@ -1,34 +0,0 @@
-/**
- * External dependencies
- */
-import { map } from 'lodash';
-
-/**
- * WordPress dependencies
- */
-import { __experimentalNavigationMenu as NavigationMenu } from '@wordpress/components';
-
-/**
- * Internal dependencies
- */
-import TemplateNavigationItem from '../template-navigation-item';
-import { MENU_TEMPLATE_PARTS } from '../constants';
-
-export default function TemplatePartsSubMenu( { menu, title, templateParts } ) {
-	return (
-		<NavigationMenu
-			className="edit-site-navigation-panel__template-parts"
-			menu={ menu }
-			title={ title }
-			parentMenu={ MENU_TEMPLATE_PARTS }
-			isEmpty={ ! templateParts || templateParts.length === 0 }
-		>
-			{ map( templateParts, ( templatePart ) => (
-				<TemplateNavigationItem
-					item={ templatePart }
-					key={ `wp_template_part-${ templatePart.id }` }
-				/>
-			) ) }
-		</NavigationMenu>
-	);
-}
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/template-parts.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/template-parts.js
deleted file mode 100644
index 7a3cffbabd61eb..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/template-parts.js
+++ /dev/null
@@ -1,94 +0,0 @@
-/**
- * External dependencies
- */
-import { groupBy } from 'lodash';
-
-/**
- * WordPress dependencies
- */
-import { __ } from '@wordpress/i18n';
-import { useSelect } from '@wordpress/data';
-import {
-	__experimentalNavigationMenu as NavigationMenu,
-	__experimentalNavigationItem as NavigationItem,
-} from '@wordpress/components';
-import { useState, useCallback } from '@wordpress/element';
-import { store as coreStore } from '@wordpress/core-data';
-
-/**
- * Internal dependencies
- */
-import {
-	MENU_ROOT,
-	MENU_TEMPLATE_PARTS,
-	TEMPLATE_PARTS_SUB_MENUS,
-} from '../constants';
-import SearchResults from '../search-results';
-import TemplatePartsSubMenu from './template-parts-sub';
-
-export default function TemplatePartsMenu() {
-	const [ search, setSearch ] = useState( '' );
-	const onSearch = useCallback( ( value ) => {
-		setSearch( value );
-	} );
-
-	const { isLoading, templateParts, templatePartsByArea } = useSelect(
-		( select ) => {
-			const templatePartRecords = select( coreStore ).getEntityRecords(
-				'postType',
-				'wp_template_part'
-			);
-
-			const _templateParts = templatePartRecords || [];
-			const _templatePartsByArea = groupBy( _templateParts, 'area' );
-
-			return {
-				isLoading: templatePartRecords === null,
-				templateParts: _templateParts,
-				templatePartsByArea: _templatePartsByArea,
-			};
-		},
-		[]
-	);
-
-	return (
-		<>
-			<NavigationMenu
-				menu={ MENU_TEMPLATE_PARTS }
-				title={ __( 'Template Parts' ) }
-				parentMenu={ MENU_ROOT }
-				hasSearch={ true }
-				onSearch={ onSearch }
-				search={ search }
-			>
-				{ search && (
-					<SearchResults items={ templateParts } search={ search } />
-				) }
-
-				{ ! search &&
-					TEMPLATE_PARTS_SUB_MENUS.map( ( { title, menu } ) => (
-						<NavigationItem
-							key={ `template-parts-navigate-to-${ menu }` }
-							className="edit-site-navigation-panel__template-part-item"
-							navigateToMenu={ menu }
-							title={ title }
-							hideIfTargetMenuEmpty
-						/>
-					) ) }
-
-				{ ! search && isLoading && (
-					<NavigationItem title={ __( 'Loading…' ) } isText />
-				) }
-			</NavigationMenu>
-
-			{ TEMPLATE_PARTS_SUB_MENUS.map( ( { area, menu, title } ) => (
-				<TemplatePartsSubMenu
-					key={ `template-parts-menu-${ menu }` }
-					menu={ menu }
-					title={ title }
-					templateParts={ templatePartsByArea[ area ] }
-				/>
-			) ) }
-		</>
-	);
-}
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/templates-sub.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/templates-sub.js
deleted file mode 100644
index 9d6322c25a4f81..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/templates-sub.js
+++ /dev/null
@@ -1,42 +0,0 @@
-/**
- * External dependencies
- */
-import { map } from 'lodash';
-
-/**
- * WordPress dependencies
- */
-import { __experimentalNavigationMenu as NavigationMenu } from '@wordpress/components';
-import { useMemo } from '@wordpress/element';
-
-/**
- * Internal dependencies
- */
-import TemplateNavigationItem from '../template-navigation-item';
-import { MENU_TEMPLATES } from '../constants';
-
-export default function TemplatesSubMenu( { menu, title, templates } ) {
-	const templatesFiltered = useMemo(
-		() =>
-			templates
-				?.filter( ( { location } ) => location === menu )
-				?.map( ( { template } ) => template ) ?? [],
-		[ menu, templates ]
-	);
-
-	return (
-		<NavigationMenu
-			menu={ menu }
-			title={ title }
-			parentMenu={ MENU_TEMPLATES }
-			isEmpty={ templatesFiltered.length === 0 }
-		>
-			{ map( templatesFiltered, ( template ) => (
-				<TemplateNavigationItem
-					item={ template }
-					key={ `wp_template-${ template.id }` }
-				/>
-			) ) }
-		</NavigationMenu>
-	);
-}
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/templates.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/templates.js
deleted file mode 100644
index 1e4de3f2358ad0..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/menus/templates.js
+++ /dev/null
@@ -1,147 +0,0 @@
-/**
- * External dependencies
- */
-import { map, find } from 'lodash';
-
-/**
- * WordPress dependencies
- */
-import {
-	__experimentalNavigationItem as NavigationItem,
-	__experimentalNavigationMenu as NavigationMenu,
-} from '@wordpress/components';
-import { useSelect } from '@wordpress/data';
-import { __ } from '@wordpress/i18n';
-import { useState, useCallback, useMemo } from '@wordpress/element';
-import { store as coreStore } from '@wordpress/core-data';
-
-/**
- * Internal dependencies
- */
-import {
-	MENU_ROOT,
-	MENU_TEMPLATES,
-	MENU_TEMPLATES_GENERAL,
-	MENU_TEMPLATES_PAGES,
-	MENU_TEMPLATES_POSTS,
-	MENU_TEMPLATES_UNUSED,
-} from '../constants';
-import NewTemplateDropdown from '../new-template-dropdown';
-import TemplateNavigationItem from '../template-navigation-item';
-import SearchResults from '../search-results';
-import TemplatesSubMenu from './templates-sub';
-import {
-	getTemplatesLocationMap,
-	getUnusedTemplates,
-} from '../template-hierarchy';
-
-export default function TemplatesMenu() {
-	const [ search, setSearch ] = useState( '' );
-	const onSearch = useCallback( ( value ) => {
-		setSearch( value );
-	} );
-
-	const { templates, showOnFront } = useSelect( ( select ) => {
-		const { getEntityRecords, getEditedEntityRecord } = select( coreStore );
-		return {
-			templates: getEntityRecords( 'postType', 'wp_template' ),
-			showOnFront: getEditedEntityRecord( 'root', 'site' ).show_on_front,
-		};
-	}, [] );
-
-	const templatesWithLocation = useMemo( () => {
-		if ( ! templates ) {
-			return null;
-		}
-
-		const unusedTemplates = getUnusedTemplates( templates, showOnFront );
-		const templateLocations = getTemplatesLocationMap( templates );
-
-		return templates.map( ( template ) => ( {
-			template,
-			location: find( unusedTemplates, { slug: template.slug } )
-				? MENU_TEMPLATES_UNUSED
-				: templateLocations[ template.slug ],
-		} ) );
-	}, [ templates ] );
-
-	const topLevelTemplates = useMemo(
-		() =>
-			templatesWithLocation
-				?.filter( ( { location } ) => location === MENU_TEMPLATES )
-				?.map( ( { template } ) => template ) ?? [],
-		[ templatesWithLocation ]
-	);
-
-	return (
-		<NavigationMenu
-			menu={ MENU_TEMPLATES }
-			title={ __( 'Templates' ) }
-			titleAction={ <NewTemplateDropdown /> }
-			parentMenu={ MENU_ROOT }
-			hasSearch={ true }
-			onSearch={ onSearch }
-			search={ search }
-		>
-			{ search && (
-				<SearchResults items={ templates } search={ search } />
-			) }
-
-			{ ! search && (
-				<>
-					{ map( topLevelTemplates, ( template ) => (
-						<TemplateNavigationItem
-							item={ template }
-							key={ `wp_template-${ template.id }` }
-						/>
-					) ) }
-					<NavigationItem
-						navigateToMenu={ MENU_TEMPLATES_POSTS }
-						title={ __( 'Post templates' ) }
-						hideIfTargetMenuEmpty
-					/>
-					<NavigationItem
-						navigateToMenu={ MENU_TEMPLATES_PAGES }
-						title={ __( 'Page templates' ) }
-						hideIfTargetMenuEmpty
-					/>
-					<NavigationItem
-						navigateToMenu={ MENU_TEMPLATES_GENERAL }
-						title={ __( 'General templates' ) }
-						hideIfTargetMenuEmpty
-					/>
-					<NavigationItem
-						navigateToMenu={ MENU_TEMPLATES_UNUSED }
-						title={ __( 'Unused templates' ) }
-						hideIfTargetMenuEmpty
-					/>
-				</>
-			) }
-
-			{ ! search && templates === null && (
-				<NavigationItem title={ __( 'Loading…' ) } isText />
-			) }
-
-			<TemplatesSubMenu
-				menu={ MENU_TEMPLATES_POSTS }
-				title={ __( 'Post templates' ) }
-				templates={ templatesWithLocation }
-			/>
-			<TemplatesSubMenu
-				menu={ MENU_TEMPLATES_PAGES }
-				title={ __( 'Page templates' ) }
-				templates={ templatesWithLocation }
-			/>
-			<TemplatesSubMenu
-				menu={ MENU_TEMPLATES_GENERAL }
-				title={ __( 'General templates' ) }
-				templates={ templatesWithLocation }
-			/>
-			<TemplatesSubMenu
-				menu={ MENU_TEMPLATES_UNUSED }
-				title={ __( 'Unused templates' ) }
-				templates={ templatesWithLocation }
-			/>
-		</NavigationMenu>
-	);
-}
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/navigation-entity-items.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/navigation-entity-items.js
deleted file mode 100644
index aef8443edfe917..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/navigation-entity-items.js
+++ /dev/null
@@ -1,53 +0,0 @@
-/**
- * WordPress dependencies
- */
-import { useDispatch, useSelect } from '@wordpress/data';
-import { __experimentalNavigationItem as NavigationItem } from '@wordpress/components';
-import { getPathAndQueryString } from '@wordpress/url';
-import { store as coreStore } from '@wordpress/core-data';
-
-/**
- * Internal dependencies
- */
-import { store as editSiteStore } from '../../../store';
-
-const getEntityTitle = ( kind, entity ) =>
-	'taxonomy' === kind ? entity.name : entity?.title?.rendered;
-
-export default function NavigationEntityItems( { kind, name, query = {} } ) {
-	const entities = useSelect(
-		( select ) => select( coreStore ).getEntityRecords( kind, name, query ),
-		[ kind, name, query ]
-	);
-
-	const { setPage } = useDispatch( editSiteStore );
-
-	if ( ! entities ) {
-		return null;
-	}
-
-	const onActivateItem = ( { type, slug, link, id } ) => {
-		setPage( {
-			type,
-			slug,
-			path: getPathAndQueryString( link ),
-			context: {
-				postType: type,
-				postId: id,
-			},
-		} );
-	};
-
-	return entities.map( ( entity ) => {
-		const key = `content-${ getPathAndQueryString( entity.link ) }`;
-
-		return (
-			<NavigationItem
-				key={ key }
-				item={ key }
-				title={ getEntityTitle( kind, entity ) }
-				onClick={ () => onActivateItem( entity ) }
-			/>
-		);
-	} );
-}
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/new-template-dropdown.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/new-template-dropdown.js
deleted file mode 100644
index a0e3ee5a0062d3..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/new-template-dropdown.js
+++ /dev/null
@@ -1,110 +0,0 @@
-/**
- * External dependencies
- */
-import { filter, find, includes, map } from 'lodash';
-
-/**
- * WordPress dependencies
- */
-import {
-	DropdownMenu,
-	MenuGroup,
-	MenuItem,
-	NavigableMenu,
-} from '@wordpress/components';
-import { useDispatch, useSelect } from '@wordpress/data';
-import { __ } from '@wordpress/i18n';
-import { Icon, plus } from '@wordpress/icons';
-import { store as editorStore } from '@wordpress/editor';
-import { store as coreStore } from '@wordpress/core-data';
-
-/**
- * Internal dependencies
- */
-import getClosestAvailableTemplate from '../../../utils/get-closest-available-template';
-import { TEMPLATES_NEW_OPTIONS } from './constants';
-import { store as editSiteStore } from '../../../store';
-
-export default function NewTemplateDropdown() {
-	const { defaultTemplateTypes, templates } = useSelect( ( select ) => {
-		const {
-			__experimentalGetDefaultTemplateTypes: getDefaultTemplateTypes,
-		} = select( editorStore );
-		const templateEntities = select( coreStore ).getEntityRecords(
-			'postType',
-			'wp_template'
-		);
-		return {
-			defaultTemplateTypes: getDefaultTemplateTypes(),
-			templates: templateEntities,
-		};
-	}, [] );
-	const { addTemplate } = useDispatch( editSiteStore );
-
-	const createTemplate = ( slug ) => {
-		const closestAvailableTemplate = getClosestAvailableTemplate(
-			slug,
-			templates
-		);
-		const { title, description } = find( defaultTemplateTypes, { slug } );
-		addTemplate( {
-			content: closestAvailableTemplate.content.raw,
-			excerpt: description,
-			// Slugs need to be strings, so this is for template `404`
-			slug: slug.toString(),
-			status: 'publish',
-			title,
-		} );
-	};
-
-	const existingTemplateSlugs = map( templates, 'slug' );
-
-	const missingTemplates = filter(
-		defaultTemplateTypes,
-		( template ) =>
-			includes( TEMPLATES_NEW_OPTIONS, template.slug ) &&
-			! includes( existingTemplateSlugs, template.slug )
-	);
-
-	if ( ! missingTemplates.length ) {
-		return null;
-	}
-
-	return (
-		<DropdownMenu
-			className="edit-site-navigation-panel__new-template-dropdown"
-			icon={ null }
-			label={ __( 'Add Template' ) }
-			popoverProps={ {
-				noArrow: false,
-			} }
-			toggleProps={ {
-				children: <Icon icon={ plus } />,
-				isSmall: true,
-				variant: 'tertiary',
-			} }
-		>
-			{ ( { onClose } ) => (
-				<NavigableMenu className="edit-site-navigation-panel__new-template-popover">
-					<MenuGroup label={ __( 'Add Template' ) }>
-						{ map(
-							missingTemplates,
-							( { title, description, slug } ) => (
-								<MenuItem
-									info={ description }
-									key={ slug }
-									onClick={ () => {
-										createTemplate( slug );
-										onClose();
-									} }
-								>
-									{ title }
-								</MenuItem>
-							)
-						) }
-					</MenuGroup>
-				</NavigableMenu>
-			) }
-		</DropdownMenu>
-	);
-}
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/search-results.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/search-results.js
deleted file mode 100644
index 5135b723135042..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/search-results.js
+++ /dev/null
@@ -1,117 +0,0 @@
-/**
- * External dependencies
- */
-import { map, sortBy, keyBy } from 'lodash';
-
-/**
- * WordPress dependencies
- */
-import { useMemo } from '@wordpress/element';
-import { __experimentalNavigationGroup as NavigationGroup } from '@wordpress/components';
-import { __ } from '@wordpress/i18n';
-
-/**
- * Internal dependencies
- */
-import { normalizedSearch } from './utils';
-import { useSelect } from '@wordpress/data';
-import { store as editorStore } from '@wordpress/editor';
-import TemplateNavigationItem from './template-navigation-item';
-import ContentNavigationItem from './content-navigation-item';
-
-export default function SearchResults( { items, search, disableFilter } ) {
-	let itemType = null;
-	if ( items?.length > 0 ) {
-		if ( items[ 0 ].taxonomy ) {
-			itemType = 'taxonomy';
-		} else {
-			itemType = items[ 0 ].type;
-		}
-	}
-
-	const itemInfos = useSelect(
-		( select ) => {
-			if ( itemType === null || items === null ) {
-				return [];
-			}
-
-			if ( itemType === 'wp_template' ) {
-				const {
-					__experimentalGetTemplateInfo: getTemplateInfo,
-				} = select( editorStore );
-
-				return items.map( ( item ) => ( {
-					slug: item.slug,
-					...getTemplateInfo( item ),
-				} ) );
-			}
-
-			if ( itemType === 'taxonomy' ) {
-				return items.map( ( item ) => ( {
-					slug: item.slug,
-					title: item.name,
-					description: item.description,
-				} ) );
-			}
-
-			return items.map( ( item ) => ( {
-				slug: item.slug,
-				title: item.title?.rendered,
-				description: item.excerpt?.rendered,
-			} ) );
-		},
-		[ items, itemType ]
-	);
-	const itemInfosMap = useMemo( () => keyBy( itemInfos, 'slug' ), [
-		itemInfos,
-	] );
-
-	const itemsFiltered = useMemo( () => {
-		if ( items === null || search.length === 0 ) {
-			return [];
-		}
-
-		if ( disableFilter ) {
-			return items;
-		}
-
-		return items.filter( ( { slug } ) => {
-			const { title, description } = itemInfosMap[ slug ];
-
-			return (
-				normalizedSearch( slug, search ) ||
-				normalizedSearch( title, search ) ||
-				normalizedSearch( description, search )
-			);
-		} );
-	}, [ items, itemInfos, search ] );
-
-	const itemsSorted = useMemo( () => {
-		if ( ! itemsFiltered ) {
-			return [];
-		}
-
-		return sortBy( itemsFiltered, [
-			( { slug } ) => {
-				const { title } = itemInfosMap[ slug ];
-				return ! normalizedSearch( title, search );
-			},
-		] );
-	}, [ itemsFiltered, search ] );
-
-	const ItemComponent =
-		itemType === 'wp_template' || itemType === 'wp_template_part'
-			? TemplateNavigationItem
-			: ContentNavigationItem;
-
-	return (
-		<NavigationGroup title={ __( 'Search results' ) }>
-			{ map( itemsSorted, ( item ) => (
-				<ItemComponent
-					item={ item }
-					key={ `${ item.taxonomy || item.type }-${ item.id }` }
-				/>
-			) ) }
-		</NavigationGroup>
-	);
-}
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/template-navigation-item.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/template-navigation-item.js
deleted file mode 100644
index 01218380a25f93..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/template-navigation-item.js
+++ /dev/null
@@ -1,83 +0,0 @@
-/**
- * WordPress dependencies
- */
-import {
-	Button,
-	__experimentalNavigationItem as NavigationItem,
-} from '@wordpress/components';
-import { useDispatch, useSelect } from '@wordpress/data';
-import { useState } from '@wordpress/element';
-import { __ } from '@wordpress/i18n';
-import { store as editorStore } from '@wordpress/editor';
-
-/**
- * Internal dependencies
- */
-import TemplatePreview from './template-preview';
-import { NavigationPanelPreviewFill } from '../index';
-import { store as editSiteStore } from '../../../store';
-
-export default function TemplateNavigationItem( { item } ) {
-	const { title, description } = useSelect(
-		( select ) =>
-			'wp_template' === item.type
-				? select( editorStore ).__experimentalGetTemplateInfo( item )
-				: {
-						title: item?.title?.rendered || item?.slug,
-						description: '',
-				  },
-		[]
-	);
-	const {
-		setTemplate,
-		setTemplatePart,
-		setIsNavigationPanelOpened,
-	} = useDispatch( editSiteStore );
-	const [ isPreviewVisible, setIsPreviewVisible ] = useState( false );
-
-	if ( ! item ) {
-		return null;
-	}
-
-	const onActivateItem = () => {
-		if ( 'wp_template' === item.type ) {
-			setTemplate( item.id, item.slug );
-		} else {
-			setTemplatePart( item.id );
-		}
-		setIsNavigationPanelOpened( false );
-	};
-
-	return (
-		<NavigationItem
-			className="edit-site-navigation-panel__template-item"
-			item={ `${ item.type }-${ item.id }` }
-		>
-			<Button
-				onClick={ onActivateItem }
-				onMouseEnter={ () => setIsPreviewVisible( true ) }
-				onMouseLeave={ () => setIsPreviewVisible( false ) }
-			>
-				<span className="edit-site-navigation-panel__info-wrapper">
-					<div className="edit-site-navigation-panel__template-item-title">
-						{ 'draft' === item.status && (
-							<em>{ __( '[Draft]' ) }</em>
-						) }
-						{ title }
-					</div>
-					{ description && (
-						<div className="edit-site-navigation-panel__template-item-description">
-							{ description }
-						</div>
-					) }
-				</span>
-			</Button>
-
-			{ isPreviewVisible && (
-				<NavigationPanelPreviewFill>
-					<TemplatePreview rawContent={ item.content.raw } />
-				</NavigationPanelPreviewFill>
-			) }
-		</NavigationItem>
-	);
-}
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/template-preview.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/template-preview.js
deleted file mode 100644
index adf069ddbb2d0e..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/template-preview.js
+++ /dev/null
@@ -1,32 +0,0 @@
-/**
- * WordPress dependencies
- */
-import { parse } from '@wordpress/blocks';
-import { BlockPreview, BlockContextProvider } from '@wordpress/block-editor';
-import { useMemo } from '@wordpress/element';
-
-export default function TemplatePreview( { rawContent, blockContext } ) {
-	const blocks = useMemo( () => ( rawContent ? parse( rawContent ) : [] ), [
-		rawContent,
-	] );
-
-	if ( ! blocks || blocks.length === 0 ) {
-		return null;
-	}
-
-	if ( blockContext ) {
-		return (
-			<div className="edit-site-navigation-panel__preview">
-				<BlockContextProvider value={ blockContext }>
-					<BlockPreview blocks={ blocks } viewportWidth={ 1200 } />
-				</BlockContextProvider>
-			</div>
-		);
-	}
-
-	return (
-		<div className="edit-site-navigation-panel__preview">
-			<BlockPreview blocks={ blocks } viewportWidth={ 1200 } />
-		</div>
-	);
-}
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/use-debounced-search.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/use-debounced-search.js
deleted file mode 100644
index eb1f75dcd61b78..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/use-debounced-search.js
+++ /dev/null
@@ -1,47 +0,0 @@
-/**
- * External dependencies
- */
-import { debounce } from 'lodash';
-
-/**
- * WordPress dependencies
- */
-import { useState, useCallback, useEffect } from '@wordpress/element';
-
-/**
- * Internal dependencies
- */
-import { SEARCH_DEBOUNCE_IN_MS } from './constants';
-
-export default function useDebouncedSearch() {
-	// The value used by the NavigationMenu to control the input field.
-	const [ search, setSearch ] = useState( '' );
-	// The value used to actually perform the search query.
-	const [ searchQuery, setSearchQuery ] = useState( '' );
-	const [ isDebouncing, setIsDebouncing ] = useState( false );
-
-	useEffect( () => {
-		setIsDebouncing( false );
-	}, [ searchQuery ] );
-
-	const debouncedSetSearchQuery = useCallback(
-		debounce( setSearchQuery, SEARCH_DEBOUNCE_IN_MS ),
-		[ setSearchQuery ]
-	);
-
-	const onSearch = useCallback(
-		( value ) => {
-			setSearch( value );
-			debouncedSetSearchQuery( value );
-			setIsDebouncing( true );
-		},
-		[ setSearch, setIsDebouncing, debouncedSetSearchQuery ]
-	);
-
-	return {
-		search,
-		searchQuery,
-		isDebouncing,
-		onSearch,
-	};
-}
diff --git a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/utils.js b/packages/edit-site/src/components/navigation-sidebar/navigation-panel/utils.js
deleted file mode 100644
index 251b90cfe44dfd..00000000000000
--- a/packages/edit-site/src/components/navigation-sidebar/navigation-panel/utils.js
+++ /dev/null
@@ -1,11 +0,0 @@
-/**
- * External dependencies
- */
-import { deburr } from 'lodash';
-
-// @see packages/block-editor/src/components/inserter/search-items.js
-export const normalizeInput = ( input ) =>
-	deburr( input ).replace( /^\//, '' ).toLowerCase();
-
-export const normalizedSearch = ( title, search ) =>
-	-1 !== normalizeInput( title ).indexOf( normalizeInput( search ) );
diff --git a/packages/edit-site/src/utils/get-closest-available-template.js b/packages/edit-site/src/utils/get-closest-available-template.js
deleted file mode 100644
index e73be0204d753a..00000000000000
--- a/packages/edit-site/src/utils/get-closest-available-template.js
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * External dependencies
- */
-import { find } from 'lodash';
-
-export default function getClosestAvailableTemplate( slug, templates ) {
-	const template = find( templates, { slug } );
-	if ( template ) {
-		return template;
-	}
-
-	switch ( slug ) {
-		case 'single':
-		case 'page':
-			return getClosestAvailableTemplate( 'singular', templates );
-		case 'author':
-		case 'category':
-		case 'taxonomy':
-		case 'date':
-		case 'tag':
-			return getClosestAvailableTemplate( 'archive', templates );
-		case 'front-page':
-			return getClosestAvailableTemplate( 'home', templates );
-		case 'attachment':
-			return getClosestAvailableTemplate( 'single', templates );
-		case 'privacy-policy':
-			return getClosestAvailableTemplate( 'page', templates );
-	}
-
-	return find( templates, { slug: 'index' } );
-}