Remove service-compiler related code.

pkg/immi_samples/lib/login_presenter.dart

-// 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 file.
-
-import 'dart:convert';
-
-import 'package:crypto/crypto.dart';
-import 'package:immi/dart/immi.dart';
-
- // Export generated code for nodes in login_presenter.immi
-import 'package:immi/dart/login_presenter.dart';
-export 'package:immi/dart/login_presenter.dart';
-
-class LoginPresenter {
-  static const String _emptyNameOrPassword =
-    'Login failed. Empty name or password.';
-
-  Node state;
-  String url;
-  String user;
-
-  LoginPresenter(this.url) {
-    state = new LoggedOutStateNode(login: login, message: '');
-  }
-
-  LoginNode present(Node prev) {
-    return new LoginNode(state: state);
-  }
-
-  void login(String name, String password) {
-    user = name;
-    if (name == '' || password == '') {
-      state = new LoggedOutStateNode(login: login,
-                                     message: _emptyNameOrPassword);
-    } else {
-      HttpsRequestNode request =
-        new HttpsRequestNode(url: url,
-                             authorization: _createAuthToken(name, password),
-                             handleResponse: _handleResponse);
-      state = new LoginRequestStateNode(request: request);
-    }
-  }
-
-  String _createAuthToken(String name, String password) {
-     List<int> bytes = UTF8.encode('$name:$password');
-     String base64 = CryptoUtils.bytesToBase64(bytes);
-     return 'Basic $base64';
-  }
-
-  void _handleResponse(String data) {
-    // TODO(zarah): implement this and return depending on data.
-    state = new LoggedInStateNode(logout: logout, user: user);
-  }
-
-  void logout() {
-    state = new LoggedOutStateNode(login: login, message: '');
-  }
-}