HttpResponse deregister(String serviceId) {
        requireNonNull(serviceId, "serviceId");
        final StringBuilder path = new StringBuilder("/agent/service/deregister/");
        PercentEncoder.encodeComponent(path, serviceId);
        return client.put(path.toString(), HttpData.empty());
    }
De-registers a service from the Consul agent.
consul/src/main/java/com/linecorp/armeria/internal/consul/AgentServiceClient.java