Revert "Added ability to request zone memory information for all isolates through the VM service an…

runtime/observatory/lib/src/models/objects/thread.dart

Index: runtime/observatory/lib/src/models/objects/thread.dart
diff --git a/runtime/observatory/lib/src/models/objects/thread.dart b/runtime/observatory/lib/src/models/objects/thread.dart
deleted file mode 100644
index a62353f7b3c88aa0689f8d2a119e03dfa8c87bb7..0000000000000000000000000000000000000000
--- a/runtime/observatory/lib/src/models/objects/thread.dart
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright (c) 2016, 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.
-
-part of models;
-
-enum ThreadKind {
-  unknownTask,
-  mutatorTask,
-  compilerTask,
-  sweeperTask,
-  markerTask,
-  finalizerTask
-}
-
-abstract class Thread {
-  /// The id associated with the thread on creation.
-  String get id;
-
-  /// The task type associated with the thread.
-  ThreadKind get kind;
-
-  /// A list of all the zones held by the thread.
-  Iterable<Zone> get zones;
-}