Delete a bunch of packages that are now on GitHub.

pkg/scheduled_test/lib/src/value_future.dart

-// 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.
-
-library value_future;
-
-import 'dart:async';
-
-/// A [Future] wrapper that provides synchronous access to the value of the
-/// wrapped [Future] once it's completed.
-class ValueFuture<T> implements Future<T> {
-  /// The wrapped [Future].
-  Future<T> _future;
-
-  /// The [value] of the wrapped [Future], if it's completed succesfully. If it
-  /// hasn't completed yet or has completed with an error, this will be `null`.
-  T get value => _value;
-  T _value;
-
-  /// Whether the wrapped [Future] has completed successfully.
-  bool get hasValue => _hasValue;
-  var _hasValue = false;
-
-  ValueFuture(Future<T> future) {
-    _future = future.then((value) {
-      _value = value;
-      _hasValue = true;
-      return value;
-    });
-  }
-
-  Stream<T> asStream() => _future.asStream();
-  Future catchError(Function onError, {bool test(error)}) =>
-    _future.catchError(onError, test: test);
-  Future then(onValue(T value), {Function onError}) =>
-    _future.then(onValue, onError: onError);
-  Future<T> whenComplete(action()) => _future.whenComplete(action);
-  Future timeout(Duration timeLimit, {void onTimeout()}) =>
-    _future.timeout(timeLimit, onTimeout: onTimeout);
-}