public static function delete(array $element) {
    if ($element['#value']) {
      $file = File::load($element['#value']);
      $file->delete();

      // Clean up the file system if needed.
      $uri = $file->getFileUri();
      if (file_exists($uri)) {
        \Drupal::service('file_system')->unlink($uri);
      }
    }
  }