code: def remove_member(self, user):
          
          username = Transform.to_user(user)
          extra = {
              'resource': self.__class__.__name__,
              'query': {
                  'id': self.id,
                  'user': user,
              }
          }
          logger.info('Removing member', extra=extra)
          self._api.delete(
              url=self._URL['member'].format(id=self.id, username=username)
          )
docs: Remove member from the project.
          :param user: User to be removed.