public function removeListener(string $eventName, $listener): void
    {
        $this->dispatcher->removeListener($eventName, $listener);
    }
public function removeListener(string $eventName, $listener): void
    {
        $this->dispatcher->removeListener($eventName, $listener);
    }
public function removeListener ( string $ eventName , $ listener ) : void { $ this -> dispatcher -> removeListener ( $ eventName , $ listener ) ; }
Remove event listener

@param string $eventName
@param type $listener

@return void
Remove event listener