Remove everything but markdown from third_party

third_party/pkg/js/lib/js_wrapping.dart

Index: third_party/pkg/js/lib/js_wrapping.dart
diff --git a/third_party/pkg/js/lib/js_wrapping.dart b/third_party/pkg/js/lib/js_wrapping.dart
deleted file mode 100644
index 39ea0a0a8daa81ee1b252fd16deefe84fbfb27dc..0000000000000000000000000000000000000000
--- a/third_party/pkg/js/lib/js_wrapping.dart
+++ /dev/null
@@ -1,17 +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.
-
-library js.wrapping;
-
-import 'dart:collection';
-import 'dart:math' show Random;
-import 'js.dart';
-
-part 'src/wrapping/translator.dart';
-part 'src/wrapping/typed_proxy.dart';
-part 'src/wrapping/magic_proxy.dart';
-part 'src/wrapping/util.dart';
-part 'src/wrapping/js/array_to_list_adapter.dart';
-part 'src/wrapping/js/date_to_datetime_adapter.dart';
-part 'src/wrapping/js/object_to_map_adapter.dart';