docs: def guest_delete_nic(self, userid, vdev, active=False):
          """ delete the nic for the vm
  
          :param str userid: the user id of the vm
          :param str vdev: nic device number, 1- to 4- hexadecimal digits
          :param bool active: whether delete a nic on active guest system
          """
          self._networkops.delete_nic(userid, vdev, active=active)