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

sdk/lib/_internal/pub_generated/test/transformer/prefers_transformer_to_library_name_test.dart

Index: sdk/lib/_internal/pub_generated/test/transformer/prefers_transformer_to_library_name_test.dart
diff --git a/sdk/lib/_internal/pub/test/transformer/prefers_transformer_to_library_name_test.dart b/sdk/lib/_internal/pub_generated/test/transformer/prefers_transformer_to_library_name_test.dart
similarity index 80%
copy from sdk/lib/_internal/pub/test/transformer/prefers_transformer_to_library_name_test.dart
copy to sdk/lib/_internal/pub_generated/test/transformer/prefers_transformer_to_library_name_test.dart
index b28506cc23a6e04958d1b554c5c2e7322d2e17e3..53b8132dba737004ee9663833cbb94b4d2e8d8de 100644
--- a/sdk/lib/_internal/pub/test/transformer/prefers_transformer_to_library_name_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/transformer/prefers_transformer_to_library_name_test.dart
@@ -31,19 +31,16 @@ main() {
   initConfig();
   withBarbackVersions("any", () {
     integration("prefers transformer.dart to <package name>.dart", () {
-      d.dir(appPath, [
-        d.pubspec({
+      d.dir(appPath, [d.pubspec({
           "name": "myapp",
           "transformers": ["myapp"]
         }),
-        d.dir("lib", [
-          d.file("transformer.dart", REWRITE_TRANSFORMER),
-          d.file("myapp.dart", WRONG_TRANSFORMER)
-        ]),
-        d.dir("web", [
-          d.file("foo.txt", "foo")
-        ])
-      ]).create();
+            d.dir(
+                "lib",
+                [
+                    d.file("transformer.dart", REWRITE_TRANSFORMER),
+                    d.file("myapp.dart", WRONG_TRANSFORMER)]),
+            d.dir("web", [d.file("foo.txt", "foo")])]).create();
 
       createLockFile('myapp', pkg: ['barback']);