remove smoke from the repo

pkg/smoke/test/mirrors_test.dart

Index: pkg/smoke/test/mirrors_test.dart
diff --git a/pkg/smoke/test/mirrors_test.dart b/pkg/smoke/test/mirrors_test.dart
deleted file mode 100644
index cac643aab81c93a6e746f0e98bda711882f6c7f6..0000000000000000000000000000000000000000
--- a/pkg/smoke/test/mirrors_test.dart
+++ /dev/null
@@ -1,14 +0,0 @@
-// Copyright (c) 2014, 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 smoke.test.mirrors_test;
-
-import 'package:smoke/mirrors.dart';
-import 'package:unittest/unittest.dart';
-import 'common.dart' as common show main;
-
-main() {
-  setUp(useMirrors);
-  common.main();
-}