Add the new grey TinyMCE icons, see #15986

git-svn-id: http://svn.automattic.com/wordpress/trunk@17842 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/js/tinymce/plugins/wordpress/editor_plugin.dev.js

@@ -67,7 +67,6 @@
 			// Register buttons
 			ed.addButton('wp_more', {
 				title : 'wordpress.wp_more_desc',
-				image : url + '/img/more.gif',
 				cmd : 'WP_More'
 			});
 
@@ -79,13 +78,11 @@
 
 			ed.addButton('wp_help', {
 				title : 'wordpress.wp_help_desc',
-				image : url + '/img/help.gif',
 				cmd : 'WP_Help'
 			});
 
 			ed.addButton('wp_adv', {
 				title : 'wordpress.wp_adv_desc',
-				image : url + '/img/toolbars.gif',
 				cmd : 'WP_Adv'
 			});