Revert "Decrease numComments when a comment gets deleted"

This reverts commit cf7e19f.

Author: XWB

Controller/ThreadController.php

@@ -267,8 +267,6 @@ public function removeThreadCommentAction(Request $request, $id, $commentId)
         $form = $this->container->get('fos_comment.form_factory.delete_comment')->createForm();
         $comment->setState($request->query->get('value', $comment::STATE_DELETED));
 
-        $thread->incrementNumComments(-1);
-
         $form->setData($comment);
 
         $view = View::create()