How to delete multiple nodes by ID in Drupal 8 using hook update

YOUR_MODULE_NAME.install

/**
 * Delete multiple nodes by ID.
 */
function YOU_MODULE_NAME_update_8001() {
  $nids = [8418,8419];

  /** @var \Drupal\node\NodeStorageInterface $storage */
  $node_storage = \Drupal::entityTypeManager()->getStorage('node');
  if ($nodes = $storage->loadMultiple($nids)) {
    $node_storage->delete($nodes);
  }
}