deleteCard method
Implementation
@override
Future<String?> deleteCard(
String devSn, String devMac, String devEkey, int keyType, String cards)async {
final result = await methodChannel.invokeMethod('deleteCard', {"devSn": devSn, "devMac":devMac, "devEkey":devEkey, "keyType":keyType, "cards":cards});
return result;
}