docs: def remove_team_membership(self, auth, team_id, username):
          """
          Remove user from team.
  
          :param auth.Authentication auth: authentication object, must be admin-level
          :param str team_id: Team's id
          :param str username: Username of the user to be removed from the team
          :raises NetworkFailure: if there is an error communicating with the server
          :raises ApiFailure: if the request cannot be serviced
          """
          url = "/admin/teams/{t}/members/{u}".format(t=team_id, u=username)
          self.delete(url, auth=auth)