Remove anchor support from the navigation block (#44721)

Author: talldan

docs/reference-guides/core-blocks.md

@@ -392,7 +392,7 @@ A collection of blocks that allow visitors to get around your site. ([Source](ht
 
 -	**Name:** core/navigation
 -	**Category:** theme
--	**Supports:** align (full, wide), anchor, inserter, spacing (blockGap, units), typography (fontSize, lineHeight), ~~html~~
+-	**Supports:** align (full, wide), inserter, spacing (blockGap, units), typography (fontSize, lineHeight), ~~html~~
 -	**Attributes:** __unstableLocation, backgroundColor, customBackgroundColor, customOverlayBackgroundColor, customOverlayTextColor, customTextColor, hasIcon, icon, maxNestingLevel, openSubmenusOnClick, overlayBackgroundColor, overlayMenu, overlayTextColor, ref, rgbBackgroundColor, rgbTextColor, showSubmenuIcon, textColor
 
 ## Custom Link

packages/block-library/src/navigation/block.json

@@ -88,7 +88,6 @@
 	},
 	"supports": {
 		"align": [ "wide", "full" ],
-		"anchor": true,
 		"html": false,
 		"inserter": true,
 		"typography": {