Remove service-compiler related code.

samples/todomvc/model.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.
-
-library todomvc.model;
-
-// Very simple model for a collection of TODO items.
-
-class Item {
-  String title;
-  bool _done = false;
-
-  Item(this.title);
-
-  bool get done => _done;
-  void complete() { _done = true; }
-  void uncomplete() { _done = false; }
-}
-
-class Model {
-  List<Item> todos;
-
-  Model() : todos = new List<Item>();
-
-  void createItem(String title) {
-    assert(title.isNotEmpty);
-    Item item = new Item(title);
-    todos.add(item);
-  }
-
-  void deleteItem(int id) {
-    if (id < todos.length) {
-      todos.removeAt(id);
-    }
-  }
-
-  void completeItem(int id) {
-    if (id < todos.length) {
-      todos[id].complete();
-    }
-  }
-
-  void uncompleteItem(int id) {
-    if (id < todos.length) {
-      todos[id].uncomplete();
-    }
-  }
-
-  void clearItems() {
-    todos.removeWhere((item) => item.done);
-  }
-
-}