Revert "Revert "Use native async/await support in pub.""

sdk/lib/_internal/pub_generated/test/lish/server_arg_overrides_publish_to_url_test.dart

Index: sdk/lib/_internal/pub_generated/test/lish/server_arg_overrides_publish_to_url_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/lish/server_arg_overrides_publish_to_url_test.dart b/sdk/lib/_internal/pub_generated/test/lish/server_arg_overrides_publish_to_url_test.dart
deleted file mode 100644
index b509445202a798ada45a70efc400dc1cef326235..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub_generated/test/lish/server_arg_overrides_publish_to_url_test.dart
+++ /dev/null
@@ -1,21 +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 'package:scheduled_test/scheduled_test.dart';
-
-import '../descriptor.dart' as d;
-import '../test_pub.dart';
-
-main() {
-  initConfig();
-  integration('an explicit --server argument overrides a "publish_to" url', () {
-    var pkg = packageMap("test_pkg", "1.0.0");
-    pkg["publish_to"] = "http://pubspec.com";
-    d.dir(appPath, [d.pubspec(pkg)]).create();
-
-    schedulePub(
-        args: ["lish", "--dry-run", "--server", "http://arg.com"],
-        output: contains("http://arg.com"));
-  });
-}