Remove everything but markdown from third_party

pkg/third_party/di_tests/di_test.dart

Index: pkg/third_party/di_tests/di_test.dart
diff --git a/pkg/third_party/di_tests/di_test.dart b/pkg/third_party/di_tests/di_test.dart
deleted file mode 100644
index 4260fa0bd7b61c6bd05319db00f0341885f3171c..0000000000000000000000000000000000000000
--- a/pkg/third_party/di_tests/di_test.dart
+++ /dev/null
@@ -1,19 +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 angular.di.test;
-
-import 'package:unittest/unittest.dart';
-import '../../../third_party/pkg/di/test/main.dart' as di;
-
-/**
- * Tests Angular's DI package
- */
-main() {
-
-  group('main', () {
-    di.main();
-  });
-}