Drupal 8 - Remove all content of type on module uninstall

mymodule.install

/**
 * @file
 * Install, update and uninstall functions for the sports_system module.
 */

/**
 * Implements hook_uninstall().
 */
function sports_system_uninstall() {
  $storage = \Drupal::entityManager()->getStorage('node');

  $query = \Drupal::entityQuery('node');
  $query->condition('type', 'player');
  $result = $query->execute();

  if (!empty($result)) {
    $ids = array_values($result);
    $entities = $storage->loadMultiple($ids);
    $storage->delete($entities);
  }

  \Drupal::cache('data')->deleteAll();
}