code: public Observable<Service> removeService(final RemoveServiceRequest request) {
          LOGGER.debug("Got instructed to remove Service {}, from Node {}", request.type(), request.hostname());
          return nodeBy(request.hostname()).removeService(request);
      }
docs: Remove a service from a node.
  
  @param request the request which contains infos about the service and node to remove.
  @return an observable which contains the removed service.