Remove message slide-down effect on the nav-menus.php page. props lessbloat, fixes #23714.

git-svn-id: https://develop.svn.wordpress.org/trunk@23640 602fd350-edb4-49c9-b593-d223f7449a82

wp-admin/css/wp-admin.css

@@ -7162,10 +7162,6 @@ a.rsswidget {
 
 /* nav-menu */
 
-.nav-menus-php #message {
-	display: none;
-}
-
 .no-js #message {
 	display: block;
 }

wp-admin/js/nav-menu.js

@@ -48,8 +48,6 @@ var wpNavMenu;
 			if( oneThemeLocationNoMenus )
 				$( '#posttype-page' ).addSelectedToMenu( api.addMenuItemToBottom );
 
-			this.messageFadeIn();
-
 			this.initAccessibility();
 
 			this.initToggles();
@@ -379,13 +377,6 @@ var wpNavMenu;
 			});
 		},
 
-		messageFadeIn : function() {
-			var messages = $( '#message' );
-
-			// Visual change when users save menus multiple times in a row
-			messages.slideDown( 'slow' );
-		},
-
 		initToggles : function() {
 			// init postboxes
 			postboxes.add_postbox_toggles('nav-menus');