diff --git a/backport-changelog/6.9/8063.md b/backport-changelog/6.9/8063.md
index 847d4c62ed3d7b..9b83fa2b4a46ad 100644
--- a/backport-changelog/6.9/8063.md
+++ b/backport-changelog/6.9/8063.md
@@ -4,7 +4,6 @@ https://github.com/WordPress/wordpress-develop/pull/8063
 * https://github.com/WordPress/gutenberg/pull/71840
 * https://github.com/WordPress/gutenberg/pull/72156
 * https://github.com/WordPress/gutenberg/pull/71811
-* https://github.com/WordPress/gutenberg/pull/72003
 * https://github.com/WordPress/gutenberg/pull/72029
 * https://github.com/WordPress/gutenberg/pull/72049
 * https://github.com/WordPress/gutenberg/pull/72011
diff --git a/lib/compat/wordpress-6.9/site-editor-redirect.php b/lib/compat/wordpress-6.9/site-editor-redirect.php
deleted file mode 100644
index 401a5fae06d5ab..00000000000000
--- a/lib/compat/wordpress-6.9/site-editor-redirect.php
+++ /dev/null
@@ -1,39 +0,0 @@
-<?php
-
-/**
- * Maps old site editor urls to the new updated ones.
- *
- * @since 6.9.0
- * @access private
- *
- * @global string $pagenow The filename of the current screen.
- *
- * @return string|false The new URL to redirect to, or false if no redirection is needed.
- */
-function gutenberg_get_site_editor_redirection_6_9() {
-	global $pagenow;
-
-	if ( 'site-editor.php' !== $pagenow ) {
-		return false;
-	}
-
-	// The following redirects are for the new permalinks in the site editor.
-	// /wp_template/tt5//home -> /wp_registered_template/tt5//home
-	if ( isset( $_REQUEST['p'] ) && preg_match( '#^/wp_template/([a-zA-Z0-9-]+//[a-zA-Z0-9-]+)$#', $_REQUEST['p'], $matches ) ) {
-		return add_query_arg( array( 'p' => '/wp_registered_template/' . $matches[1] ), remove_query_arg( array( 'p' ) ) );
-	}
-
-	return false;
-}
-
-/**
- * Redirect old site editor urls to the new updated ones.
- */
-function gutenberg_redirect_site_editor_deprecated_urls_6_9() {
-	$redirection = gutenberg_get_site_editor_redirection_6_9();
-	if ( false !== $redirection ) {
-		wp_safe_redirect( $redirection );
-		exit;
-	}
-}
-add_action( 'admin_init', 'gutenberg_redirect_site_editor_deprecated_urls_6_9' );
diff --git a/lib/load.php b/lib/load.php
index be700ad25660ab..486bcfc54a916e 100644
--- a/lib/load.php
+++ b/lib/load.php
@@ -84,7 +84,6 @@ function gutenberg_is_experiment_enabled( $name ) {
 require __DIR__ . '/compat/wordpress-6.9/customizer-preview-custom-css.php';
 require __DIR__ . '/compat/wordpress-6.9/command-palette.php';
 require __DIR__ . '/compat/wordpress-6.9/preload.php';
-require __DIR__ . '/compat/wordpress-6.9/site-editor-redirect.php';
 
 // WordPress 7.0 compat.
 require __DIR__ . '/compat/wordpress-7.0/php-only-blocks.php';