Remove service-compiler related code.

samples/github/bin/github_mock_service.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.md file.
-
-import 'package:service/dart/github_mock.dart';
-import 'package:github_sample/src/github_mock.dart';
-import 'package:github_sample/src/github_mock_data.dart';
-
-class GithubMockServerImpl extends GithubMockServer {
-  GithubMock mock;
-
-  GithubMockServerImpl() {
-    mock = new GithubMock('127.0.0.1', 8321);
-    mock.dataStorage = new ByteMapDataStorage();
-    mock.verbose = true;
-  }
-
-  void start(int port) {
-    mock.spawn();
-  }
-
-  void stop() {
-    mock.close();
-  }
-}
-
-main() {
-  var impl = new GithubMockServerImpl();
-  GithubMockServer.initialize(impl);
-  while (GithubMockServer.hasNextEvent()) {
-    GithubMockServer.handleNextEvent();
-  }
-}