code: def remove_config_to_machine_group(self, project_name, config_name, group_name):
          
          headers = {}
          params = {}
          resource = "/machinegroups/" + group_name + "/configs/" + config_name
          (resp, header) = self._send("DELETE", project_name, None, resource, params, headers)
          return RemoveConfigToMachineGroupResponse(header, resp)
docs: remove a logtail config to a machine group
          Unsuccessful opertaion will cause an LogException.
  
          :type project_name: string
          :param project_name: the Project name 
  
          :type config_name: string
          :param config_name: the logtail config name to apply
          
          :type group_name: string
          :param group_name: the machine group name 
  
          :return: RemoveConfigToMachineGroupResponse
          
          :raise: LogException