TASK: Remove declaration of obsolete $dispatched state

followup to neos/flow-development-collection#3294

Classes/Mvc/ActionRequest.php

@@ -105,12 +105,6 @@ class ActionRequest
      */
     protected $format = '';
 
-    /**
-     * If this request has been changed and needs to be dispatched again
-     * @var boolean
-     */
-    protected $dispatched = false;
-
     /**
      * The parent request – either another sub ActionRequest a main ActionRequest or null
      * @var ?ActionRequest
@@ -656,14 +650,6 @@ public function getFormat(): string
         return $this->format;
     }
 
-    /**
-     * Resets the dispatched status to false
-     */
-    public function __clone()
-    {
-        $this->dispatched = false;
-    }
-
     /**
      * We provide our own __sleep method, where we serialize all properties *except* the parentRequest if it is
      * a HTTP request -- as this one contains $_SERVER etc.