Removed tip that was meant for the 2.x versions

Author: Iltar van der Berg

controller/service.rst

@@ -336,12 +336,6 @@ controller:
 
         return new StreamedResponse($callback);
 
-.. tip::
-
-    ``getRequest()`` has been deprecated. Instead, have an argument to your
-    controller action method called ``Request $request``. The order of the
-    parameters is not important, but the typehint must be provided.
-
 .. _`Controller class source code`: https://github.com/symfony/symfony/blob/master/src/Symfony/Bundle/FrameworkBundle/Controller/Controller.php
 .. _`base Controller class`: https://github.com/symfony/symfony/blob/master/src/Symfony/Bundle/FrameworkBundle/Controller/Controller.php
 .. _`FrameworkExtraBundle documentation`: https://symfony.com/doc/current/bundles/SensioFrameworkExtraBundle/annotations/routing.html#controller-as-service