deleteProperties method
Deletes multiple properties from the current subscription.
Parameters:
- properties: List of property names to delete
Example:
await SuperFCM.instance.deleteProperties(['temporary', 'oldFeature']);
Implementation
Future<bool> deleteProperties(List<String> properties) async {
  return _queueOrExecute("deleteProperties", () async {
    logger.d('Deleting properties: ${properties.join(', ')}');
    return await updateProperties(
      Map.fromEntries(properties.map((key) => MapEntry(key, null))),
    );
  });
}