[FrameworkBundle] Removed unnecessary parameter in TemplateController

Response::setPublic doesn't have any parameters, so this parameter call is not needed.

src/Symfony/Bundle/FrameworkBundle/Controller/TemplateController.php

@@ -47,7 +47,7 @@ class TemplateController extends ContainerAware
         if ($private) {
             $response->setPrivate();
         } elseif ($private === false || (null === $private && ($maxAge || $sharedAge))) {
-            $response->setPublic($private);
+            $response->setPublic();
         }
 
         return $response;