media manager: removed obsolete and broken hiding of parts of the option labels

lib/scripts/media.js

@@ -124,7 +124,6 @@ var dw_mediamanager = {
         $both.find('label').each(function () {
             var $this = jQuery(this);
             $this.children('input').appendTo($this.parent());
-            $this.find('span span').addClass('a11y');
         });
 
         // Init buttonset