code: def __remove_handler_factory(self, svc_ref):
          # type: (ServiceReference) -> None
          
          with self.__handlers_lock:
              # Get the handler ID
              handler_id = svc_ref.get_property(handlers_const.PROP_HANDLER_ID)
  
              # Check if this is the handler we use
              if svc_ref not in self._handlers_refs:
                  return
  
              # Clean up
              self.__context.unget_service(svc_ref)
              self._handlers_refs.remove(svc_ref)
              del self._handlers[handler_id]
  
              # List the components using this handler
              to_stop = set()  # type: Set[StoredInstance]
              for factory_name in self.__factories:
                  _, factory_context = self.__get_factory_with_context(
                      factory_name
                  )
                  if handler_id in factory_context.get_handlers_ids():
                      to_stop.update(self.__get_stored_instances(factory_name))
  
              with self.__instances_lock:
                  for stored_instance in to_stop:
                      # Extract information
                      context = stored_instance.context
                      name = context.name
                      instance = stored_instance.instance
  
                      # Clean up the stored instance (iPOPO side)
                      del self.__instances[name]
                      stored_instance.kill()
  
                      # Add the component to the waiting queue
                      self.__waiting_handlers[name] = (context, instance)
  
              # Try to find a new handler factory
              new_ref = self.__context.get_service_reference(
                  handlers_const.SERVICE_IPOPO_HANDLER_FACTORY,
                  "({0}={1})".format(handlers_const.PROP_HANDLER_ID, handler_id),
              )
              if new_ref is not None:
                  self.__add_handler_factory(new_ref)
docs: Removes an handler factory
  
          :param svc_ref: ServiceReference of the handler factory to remove