Use native async/await support in pub.

sdk/lib/_internal/pub_generated/test/global/run/runs_git_script_test.dart

Index: sdk/lib/_internal/pub_generated/test/global/run/runs_git_script_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/global/run/runs_git_script_test.dart b/sdk/lib/_internal/pub_generated/test/global/run/runs_git_script_test.dart
deleted file mode 100644
index ca9a6c368270d9c3acf911e85483aa2e2dc78a62..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub_generated/test/global/run/runs_git_script_test.dart
+++ /dev/null
@@ -1,25 +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.
-
-import '../../descriptor.dart' as d;
-import '../../test_pub.dart';
-
-main() {
-  initConfig();
-  integration('runs a script in a git package', () {
-    ensureGit();
-
-    d.git(
-        'foo.git',
-        [
-            d.libPubspec("foo", "1.0.0"),
-            d.dir("bin", [d.file("foo.dart", "main() => print('ok');")])]).create();
-
-    schedulePub(args: ["global", "activate", "-sgit", "../foo.git"]);
-
-    var pub = pubRun(global: true, args: ["foo"]);
-    pub.stdout.expect("ok");
-    pub.shouldExit();
-  });
-}