Removed entity flag stylesheet and icons from plugin to core.

plugins/UserFlag/UserFlagPlugin.php

@@ -182,21 +182,6 @@ class UserFlagPlugin extends Plugin
         return true;
     }
 
-    /**
-     * Add our plugin's CSS to page output
-     *
-     * @param Action $action action being shown
-     *
-     * @return boolean hook result
-     */
-
-    function onEndShowStatusNetStyles($action)
-    {
-        $action->cssLink(common_path('plugins/UserFlag/userflag.css'),
-                         null, 'screen, projection, tv');
-        return true;
-    }
-
     /**
      * Initialize any flagging buttons on the page
      *