code: def delete_ace(self, domain=None, user=None, sid=None):
          
          if sid is None:
              if domain is None:
                  domain = self.cifs_server.domain
  
              sid = UnityAclUser.get_sid(self._cli, user=user, domain=domain)
          if isinstance(sid, six.string_types):
              sid = [sid]
          ace_list = [self._make_remove_ace_entry(s) for s in sid]
  
          resp = self.action("setACEs", cifsShareACEs=ace_list)
          resp.raise_if_err()
          return resp
docs: delete ACE for the share
  
          delete ACE for the share.  User could either supply the domain and
          username or the sid of the user.
  
          :param domain: domain of the user
          :param user: username
          :param sid: sid of the user or sid list of the user
          :return: REST API response