[AsseticBundle] Remove an unused property

src/Symfony/Bundle/AsseticBundle/Factory/Resource/FileResource.php

@@ -23,11 +23,9 @@ use Symfony\Component\Templating\Loader\LoaderInterface;
 class FileResource implements ResourceInterface
 {
     protected $loader;
-    protected $parser;
     protected $bundle;
     protected $baseDir;
     protected $path;
-
     protected $template;
 
     /**