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

sdk/lib/_internal/pub_generated/test/get/hosted/gets_a_package_with_busted_dev_dependencies_test.dart

Index: sdk/lib/_internal/pub_generated/test/get/hosted/gets_a_package_with_busted_dev_dependencies_test.dart
diff --git a/sdk/lib/_internal/pub/test/get/hosted/gets_a_package_with_busted_dev_dependencies_test.dart b/sdk/lib/_internal/pub_generated/test/get/hosted/gets_a_package_with_busted_dev_dependencies_test.dart
similarity index 62%
copy from sdk/lib/_internal/pub/test/get/hosted/gets_a_package_with_busted_dev_dependencies_test.dart
copy to sdk/lib/_internal/pub_generated/test/get/hosted/gets_a_package_with_busted_dev_dependencies_test.dart
index 2b8f2bfff39b8deeab857087f1f500799cbf07a3..1ca31ecaf257a3fe5bc73d9d1400de81b03211a2 100644
--- a/sdk/lib/_internal/pub/test/get/hosted/gets_a_package_with_busted_dev_dependencies_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/get/hosted/gets_a_package_with_busted_dev_dependencies_test.dart
@@ -12,21 +12,30 @@ main() {
   initConfig();
 
   // Regression test for issue 22194.
-  integration('gets a dependency with broken dev dependencies from a pub '
-      'server', () {
+  integration(
+      'gets a dependency with broken dev dependencies from a pub ' 'server',
+      () {
     servePackages((builder) {
       builder.serve("foo", "1.2.3", pubspec: {
         "dev_dependencies": {
-          "busted": {"not a real source": null}
+          "busted": {
+            "not a real source": null
+          }
         }
       });
     });
 
-    d.appDir({"foo": "1.2.3"}).create();
+    d.appDir({
+      "foo": "1.2.3"
+    }).create();
 
     pubGet();
 
-    d.cacheDir({"foo": "1.2.3"}).validate();
-    d.packagesDir({"foo": "1.2.3"}).validate();
+    d.cacheDir({
+      "foo": "1.2.3"
+    }).validate();
+    d.packagesDir({
+      "foo": "1.2.3"
+    }).validate();
   });
 }