code: public function unregisterView($view, $order, $applicationName = 'default')
      {
          if (isset($this->views[$applicationName][$order][$view])) {
              unset($this->views[$applicationName][$order][$view]);
          }
          return $this;
      }
docs: Unregister a given view
  
  @param string $view
  The view to unregister
  @param string $applicationName
  Optional application name where the view is registered
  
  @return Application Current application instance