removeAdmin method
移除管理员
Implementation
Future<EMGroup> removeAdmin(
String groupId,
String adminId,
) async {
Map req = {'groupId': groupId, 'admin': adminId};
Map result = await _channel.invokeMethod(EMSDKMethod.removeAdmin, req);
EMError.hasErrorFromResult(result);
return EMGroup.fromJson(result[EMSDKMethod.removeAdmin]);
}