delete observe from the repo

pkg/observe/lib/observe.dart

Index: pkg/observe/lib/observe.dart
diff --git a/pkg/observe/lib/observe.dart b/pkg/observe/lib/observe.dart
deleted file mode 100644
index 20912f9c36f1e45b2a8acf7a28fec093f3f61053..0000000000000000000000000000000000000000
--- a/pkg/observe/lib/observe.dart
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@@ -1,117 +0,0 @@
-// Copyright (c) 2013, the Dart 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.
-
-/// Support for observing changes in model-view architectures.
-///
-/// **Warning:** This library is experimental, and APIs are subject to change.
-///
-/// This library is used to observe changes to [Observable] types. It also
-/// has helpers to make implementing and using [Observable] objects easy.
-///
-/// You can provide an observable object in two ways. The simplest way is to
-/// use dirty checking to discover changes automatically:
-///
-///     import 'package:observe/observe.dart';
-///     import 'package:observe/mirrors_used.dart'; // for smaller code
-///
-///     class Monster extends Unit with Observable {
-///       @observable int health = 100;
-///
-///       void damage(int amount) {
-///         print('$this takes $amount damage!');
-///         health -= amount;
-///       }
-///
-///       toString() => 'Monster with $health hit points';
-///     }
-///
-///     main() {
-///       var obj = new Monster();
-///       obj.changes.listen((records) {
-///         print('Changes to $obj were: $records');
-///       });
-///       // No changes are delivered until we check for them
-///       obj.damage(10);
-///       obj.damage(20);
-///       print('dirty checking!');
-///       Observable.dirtyCheck();
-///       print('done!');
-///     }
-///
-/// A more sophisticated approach is to implement the change notification
-/// manually. This avoids the potentially expensive [Observable.dirtyCheck]
-/// operation, but requires more work in the object:
-///
-///     import 'package:observe/observe.dart';
-///     import 'package:observe/mirrors_used.dart'; // for smaller code
-///
-///     class Monster extends Unit with ChangeNotifier {
-///       int _health = 100;
-///       @reflectable get health => _health;
-///       @reflectable set health(val) {
-///         _health = notifyPropertyChange(#health, _health, val);
-///       }
-///
-///       void damage(int amount) {
-///         print('$this takes $amount damage!');
-///         health -= amount;
-///       }
-///
-///       toString() => 'Monster with $health hit points';
-///     }
-///
-///     main() {
-///       var obj = new Monster();
-///       obj.changes.listen((records) {
-///         print('Changes to $obj were: $records');
-///       });
-///       // Schedules asynchronous delivery of these changes
-///       obj.damage(10);
-///       obj.damage(20);
-///       print('done!');
-///     }
-///
-/// **Note**: by default this package uses mirrors to access getters and setters
-/// marked with `@reflectable`. Dart2js disables tree-shaking if there are any
-/// uses of mirrors, unless you declare how mirrors are used (via the
-/// [MirrorsUsed](https://api.dartlang.org/apidocs/channels/stable/#dart-mirrors.MirrorsUsed)
-/// annotation).
-///
-/// As of version 0.10.0, this package doesn't declare `@MirrorsUsed`. This is
-/// because we intend to use mirrors for development time, but assume that
-/// frameworks and apps that use this pacakge will either generate code that
-/// replaces the use of mirrors, or add the `@MirrorsUsed` declaration
-/// themselves.  For convenience, you can import
-/// `package:observe/mirrors_used.dart` as shown on the first example above.
-/// That will add a `@MirrorsUsed` annotation that preserves properties and
-/// classes labeled with `@reflectable` and properties labeled with
-/// `@observable`.
-///
-/// If you are using the `package:observe/mirrors_used.dart` import, you can
-/// also make use of `@reflectable` on your own classes and dart2js will
-/// preserve all of its members for reflection.
-///
-/// [Tools](https://www.dartlang.org/polymer-dart/) exist to convert the first
-/// form into the second form automatically, to get the best of both worlds.
-library observe;
-
-// This library contains code ported from observe-js:
-// https://github.com/Polymer/observe-js/blob/0152d542350239563d0f2cad39d22d3254bd6c2a/src/observe.js
-// We port what is needed for data bindings. Most of the functionality is
-// ported, except where differences are needed for Dart's Observable type.
-
-export 'src/bindable.dart';
-export 'src/bind_property.dart';
-export 'src/change_notifier.dart';
-export 'src/change_record.dart';
-export 'src/list_path_observer.dart';
-export 'src/list_diff.dart' show ListChangeRecord;
-export 'src/metadata.dart';
-export 'src/observable.dart' hide notifyPropertyChangeHelper;
-export 'src/observable_box.dart';
-export 'src/observable_list.dart';
-export 'src/observable_map.dart';
-export 'src/observer_transform.dart';
-export 'src/path_observer.dart' hide getSegmentsOfPropertyPathForTesting;
-export 'src/to_observable.dart';