Toolbar: Accessibility: Remove adminbar skiplink focus fix.

Based on the current browser support policies and expectations, this is no longer needed. There are almost no browsers in use where this is still in use. The same fix was removed from core themes in #54421.

Props joedolson, sabernhardt, shailu25.
Fixes #60479.

git-svn-id: https://develop.svn.wordpress.org/trunk@58133 602fd350-edb4-49c9-b593-d223f7449a82

src/js/_enqueues/lib/admin-bar.js

@@ -95,11 +95,6 @@
 			} );
 		}
 
-		if ( skipLink ) {
-			// Focus the target of skip link after pressing Enter.
-			skipLink.addEventListener( 'keydown', focusTargetAfterEnter );
-		}
-
 		if ( shortlink ) {
 			shortlink.addEventListener( 'click', clickShortlink );
 		}
@@ -173,35 +168,6 @@
 		}
 	}
 
-	/**
-	 * Focus the target of skip link after pressing Enter.
-	 *
-	 * @since 5.3.1
-	 *
-	 * @param {Event} event The keydown event.
-	 */
-	function focusTargetAfterEnter( event ) {
-		var id, userAgent;
-
-		if ( event.which !== 13 ) {
-			return;
-		}
-
-		id = event.target.getAttribute( 'href' );
-		userAgent = navigator.userAgent.toLowerCase();
-
-		if ( userAgent.indexOf( 'applewebkit' ) > -1 && id && id.charAt( 0 ) === '#' ) {
-			setTimeout( function() {
-				var target = document.getElementById( id.replace( '#', '' ) );
-
-				if ( target ) {
-					target.setAttribute( 'tabIndex', '0' );
-					target.focus();
-				}
-			}, 100 );
-		}
-	}
-
 	/**
 	 * Toggle hover class for mobile devices.
 	 *