docs: def remove_user_from_group(self, username, group_name):
          """
          Remove given user from a group
  
          :param username: str
          :param group_name: str
          :return:
          """
          log.warning('Removing user from a group...')
          url = 'rest/api/2/group/user'
          params = {'groupname': group_name, 'username': username}
  
          return self.delete(url, params=params)