Core: Removed .focus( delay )

Fixes #9649

tests/unit/core/core_deprecated.js

@@ -2,34 +2,6 @@
 
 module( "core - deprecated" );
 
-asyncTest( "focus - original functionality", function() {
-	expect( 1 );
-	$( "#inputTabindex0" )
-		.one( "focus", function() {
-			ok( true, "event triggered" );
-			start();
-		})
-		.focus();
-});
-
-asyncTest( "focus", function() {
-	expect( 2 );
-
-	// support: IE 8
-	// IE sometimes gets confused about what's focused if we don't explicitly
-	// focus a different element first
-	$( "body" ).focus();
-
-	$( "#inputTabindex0" )
-		.one( "focus", function() {
-			ok( true, "event triggered" );
-			start();
-		})
-		.focus( 500, function() {
-			ok( true, "callback triggered" );
-		});
-});
-
 test( "zIndex", function() {
 	expect( 7 );
 	var el = $( "#zIndexAutoWithParent" ),

ui/core.js

@@ -209,22 +209,6 @@ if ( $( "<a>" ).data( "a-b", "a" ).removeData( "a-b" ).data( "a-b" ) ) {
 $.ui.ie = !!/msie [\w.]+/.exec( navigator.userAgent.toLowerCase() );
 
 $.fn.extend({
-	focus: (function( orig ) {
-		return function( delay, fn ) {
-			return typeof delay === "number" ?
-				this.each(function() {
-					var elem = this;
-					setTimeout(function() {
-						$( elem ).focus();
-						if ( fn ) {
-							fn.call( elem );
-						}
-					}, delay );
-				}) :
-				orig.apply( this, arguments );
-		};
-	})( $.fn.focus ),
-
 	disableSelection: (function() {
 		var eventType = "onselectstart" in document.createElement( "div" ) ?
 			"selectstart" :