Tidy up class comment.

Remove useless information.

src/Http/Response.php

@@ -28,10 +28,7 @@ use Zend\Diactoros\MessageTrait;
 use Zend\Diactoros\Stream;
 
 /**
- * Cake Response is responsible for managing the response text, status and headers of a HTTP response.
- *
- * By default controllers will use this class to render their response. If you are going to use
- * a custom response class it should subclass this object in order to ensure compatibility.
+ * Responses contain the response text, status and headers of a HTTP response.
  */
 class Response implements ResponseInterface
 {