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

sdk/lib/_internal/pub_generated/test/global/binstubs/reactivate_removes_old_executables_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';
 
 main() {
   initConfig();
   integration("removes previous binstubs when reactivating a package", () {
-    d.dir("foo", [
-      d.pubspec({
+    d.dir("foo", [d.pubspec({
         "name": "foo",
         "executables": {
           "one": null,
           "two": null
         }
       }),
-      d.dir("bin", [
-        d.file("one.dart", "main() => print('ok');"),
-        d.file("two.dart", "main() => print('ok');")
-      ])
-    ]).create();
+          d.dir(
+              "bin",
+              [
+                  d.file("one.dart", "main() => print('ok');"),
+                  d.file("two.dart", "main() => print('ok');")])]).create();
 
     schedulePub(args: ["global", "activate", "--source", "path", "../foo"]);
 
-    d.dir("foo", [
-      d.pubspec({
+    d.dir("foo", [d.pubspec({
         "name": "foo",
         "executables": {
           // Remove "one".
           "two": null
         }
-      }),
-    ]).create();
+      }),]).create();
 
     schedulePub(args: ["global", "activate", "--source", "path", "../foo"]);
 
-    d.dir(cachePath, [
-      d.dir("bin", [
-        d.nothing(binStubName("one")),
-        d.matcherFile(binStubName("two"), contains("two"))
-      ])
-    ]).validate();
+    d.dir(
+        cachePath,
+        [
+            d.dir(
+                "bin",
+                [
+                    d.nothing(binStubName("one")),
+                    d.matcherFile(binStubName("two"), contains("two"))])]).validate();
   });
 }