drupal的批量删除api，entity_delete_multiple，已经被删除

1. 请使用新的api

    $bookManager = \Drupal::service('book.manager');
    $entity = \Drupal::entityTypeManager()->getStorage('node');

    $context['message'] = t('Deleting %title', ['%title' => $queue->title]);
    $query = $entity->getQuery();
    //todo 如果pid不为空，按pid查，否则，按title查
    $id = $query
      ->condition('type', 'book')
      ->condition('title', $queue->title)
      ->execute();

    // Load multiples or single item load($id) https://drupalbook.org/drupal/9111-working-entity-fields-programmatically
    $books = $entity->loadMultiple($id);

    if (!empty($books)) {
      foreach ($books as $book) {
        if ($bookManager->loadBookLink($book->id())) {
          $bookManager->deleteFromBook($book->id());
        }

      }
      $entity->delete($books);
    }