code: def delete_os_out_nwk(self, tenant_id, fw_dict, is_fw_virt=False):
          
          ret = True
          tenant_name = fw_dict.get('tenant_name')
          try:
              ret = self._delete_os_nwk(tenant_id, tenant_name, "out",
                                        is_fw_virt=is_fw_virt)
          except Exception as exc:
              LOG.error("Deletion of Out Openstack Network failed tenant "
                        "%(tenant)s, Exception %(exc)s",
                        {'tenant': tenant_id, 'exc': str(exc)})
              ret = False
          # Updating the FW DB
          if ret:
              res = fw_const.OS_OUT_NETWORK_DEL_SUCCESS
          else:
              res = fw_const.OS_OUT_NETWORK_DEL_FAIL
          self.update_fw_db_result(tenant_id, os_status=res)
          return ret
docs: Deletes the Openstack Out network and update the DB.