docs: def delete_user_role(deleted_user_id, role_id,**kwargs):
      """
          Remove a user from a role
      """
      #check_perm(kwargs.get('user_id'), 'edit_role')
      try:
          _get_user(deleted_user_id)
          _get_role(role_id)
          roleuser_i = db.DBSession.query(RoleUser).filter(RoleUser.user_id==deleted_user_id, RoleUser.role_id==role_id).one()
          db.DBSession.delete(roleuser_i)
      except NoResultFound:
          raise ResourceNotFoundError("User Role does not exist")
  
      return 'OK'