def remove_member(self, user, api=None):
        """
        Remove a member from the automation
        :param user: Member username
        :param api: sevenbridges Api instance
        :return: None
        """
        api = api or self._API
        AutomationMember.remove(automation=self.id, user=user, api=api)
Remove a member from the automation
        :param user: Member username
        :param api: sevenbridges Api instance
        :return: None