diff --git a/src/js/_enqueues/wp/a11y.js b/src/js/_enqueues/wp/a11y.js
deleted file mode 100644
index a4a045528a..0000000000
--- a/src/js/_enqueues/wp/a11y.js
+++ /dev/null
@@ -1,107 +0,0 @@
-/**
- * @output wp-includes/js/wp-a11y.js
- */
-
-/** @namespace wp */
-window.wp = window.wp || {};
-
-( function ( wp, $ ) {
-	'use strict';
-
-	var $containerPolite,
-		$containerAssertive,
-		previousMessage = '';
-
-	/**
-	 * Update the ARIA live notification area text node.
-	 *
-	 * @since 4.2.0
-	 * @since 4.3.0 Introduced the 'ariaLive' argument.
-	 *
-	 * @param {string} message    The message to be announced by Assistive Technologies.
-	 * @param {string} [ariaLive] The politeness level for aria-live. Possible values:
-	 *                            polite or assertive. Default polite.
-	 * @return {void}
-	 */
-	function speak( message, ariaLive ) {
-		// Clear previous messages to allow repeated strings being read out.
-		clear();
-
-		// Remove HTML tags, ensuring only text is sent to screen readers.
-		message = wp.sanitize.stripTagsAndEncodeText( message );
-
-		/*
-		 * Safari 10+VoiceOver don't announce repeated, identical strings. We use
-		 * a `no-break space` to force them to think identical strings are different.
-		 * See ticket #36853.
-		 */
-		if ( previousMessage === message ) {
-			message = message + '\u00A0';
-		}
-
-		previousMessage = message;
-
-		if ( $containerAssertive && 'assertive' === ariaLive ) {
-			$containerAssertive.text( message );
-		} else if ( $containerPolite ) {
-			$containerPolite.text( message );
-		}
-	}
-
-	/**
-	 * Build the live regions markup.
-	 *
-	 * @since 4.3.0
-	 *
-	 * @param {string} ariaLive Optional. Value for the 'aria-live' attribute, default 'polite'.
-	 *
-	 * @return {Object} $container The ARIA live region jQuery object.
-	 */
-	function addContainer( ariaLive ) {
-		ariaLive = ariaLive || 'polite';
-
-		var $container = $( '<div>', {
-			'id': 'wp-a11y-speak-' + ariaLive,
-			'aria-live': ariaLive,
-			'aria-relevant': 'additions text',
-			'aria-atomic': 'true',
-			'class': 'screen-reader-text wp-a11y-speak-region'
-		});
-
-		$( document.body ).append( $container );
-		return $container;
-	}
-
-	/**
-	 * Clear the live regions.
-	 *
-	 * @since 4.3.0
-	 */
-	function clear() {
-		$( '.wp-a11y-speak-region' ).text( '' );
-	}
-
-	/**
-	 * Initialize wp.a11y and define ARIA live notification area.
-	 *
-	 * @since 4.2.0
-	 * @since 4.3.0 Added the assertive live region.
-	 */
-	$( document ).ready( function() {
-		$containerPolite = $( '#wp-a11y-speak-polite' );
-		$containerAssertive = $( '#wp-a11y-speak-assertive' );
-
-		if ( ! $containerPolite.length ) {
-			$containerPolite = addContainer( 'polite' );
-		}
-
-		if ( ! $containerAssertive.length ) {
-			$containerAssertive = addContainer( 'assertive' );
-		}
-	});
-
-	/** @namespace wp.a11y */
-	wp.a11y = wp.a11y || {};
-	wp.a11y.speak = speak;
-
-}( window.wp, window.jQuery ));