def routers_removed_from_hosting_device(self, context, router_ids,<EOL>hosting_device):
self._agent_notification_bulk(<EOL>context, '<STR_LIT>', router_ids,<EOL>hosting_device, operation=None)<EOL>
Notify cfg agent that routers have been removed from hosting device.
        @param: context - information about tenant, user etc
        @param: router-ids - list of ids
        @param: hosting_device - device hosting the routers