Use native async/await support in pub.

sdk/lib/_internal/pub_generated/test/global/binstubs/explicit_and_no_executables_options_test.dart

Index: sdk/lib/_internal/pub_generated/test/global/binstubs/explicit_and_no_executables_options_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/global/binstubs/explicit_and_no_executables_options_test.dart b/sdk/lib/_internal/pub_generated/test/global/binstubs/explicit_and_no_executables_options_test.dart
deleted file mode 100644
index d93ed56291c065234b08853fd7d01ce415507566..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub_generated/test/global/binstubs/explicit_and_no_executables_options_test.dart
+++ /dev/null
@@ -1,29 +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 '../../../lib/src/exit_codes.dart' as exit_codes;
-import '../../descriptor.dart' as d;
-import '../../test_pub.dart';
-
-main() {
-  initConfig();
-  integration("errors if -x and --no-executables are both passed", () {
-    d.dir("foo", [d.libPubspec("foo", "1.0.0")]).create();
-
-    schedulePub(
-        args: [
-            "global",
-            "activate",
-            "--source",
-            "path",
-            "../foo",
-            "-x",
-            "anything",
-            "--no-executables"],
-        error: contains("Cannot pass both --no-executables and --executable."),
-        exitCode: exit_codes.USAGE);
-  });
-}