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

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

 // 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';
 import 'utils.dart';
 
 main() {
   initConfig();
   integration("removes all binstubs for package", () {
-    d.dir("foo", [
-      d.pubspec({
+    d.dir("foo", [d.pubspec({
         "name": "foo",
         "executables": {
           "foo": null
         }
       }),
-      d.dir("bin", [
-        d.file("foo.dart", "main() => print('ok');")
-      ])
-    ]).create();
+          d.dir("bin", [d.file("foo.dart", "main() => print('ok');")])]).create();
 
     // Create the binstub for foo.
     schedulePub(args: ["global", "activate", "--source", "path", "../foo"]);
 
     // Remove it from the pubspec.
-    d.dir("foo", [
-      d.pubspec({
+    d.dir("foo", [d.pubspec({
         "name": "foo"
-      })
-    ]).create();
+      })]).create();
 
     // Deactivate.
     schedulePub(args: ["global", "deactivate", "foo"]);
 
     // It should still be deleted.
-    d.dir(cachePath, [
-      d.dir("bin", [
-        d.nothing(binStubName("foo"))
-      ])
-    ]).validate();
+    d.dir(
+        cachePath,
+        [d.dir("bin", [d.nothing(binStubName("foo"))])]).validate();
   });
 }