Remove service-compiler related code.

pkg/immi_samples/lib/login_presenter.immi

-// Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE.md file.
-
-node HttpsRequest {
-  String authorization;
-  String url;
-  void handleResponse(String data);
-}
-
-node Login {
-  Node state;
-}
-
-node LoggedOutState {
-  void login(String name, String password);
-  String message;
-}
-
-node LoginRequestState {
-  HttpsRequest request;
-}
-
-node LoggedInState {
-  void logout();
-  String user;
-}