removed service call from controller

Author: Slobodan Stanic

cookbook/security/voters.rst

@@ -224,8 +224,6 @@ from the authorization checker is called.
  // get a Post instance
  $post = ...;
 
- $authChecker = $this->get('security.authorization_checker');
-
  $this->denyAccessUnlessGranted('view', $post, 'Unauthorized access!');
 
  return new Response('<h1>'.$post->getName().'</h1>');