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

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

Index: sdk/lib/_internal/pub_generated/test/transformer/loads_a_transformer_defined_in_an_exported_library_test.dart
diff --git a/sdk/lib/_internal/pub/test/transformer/loads_a_transformer_defined_in_an_exported_library_test.dart b/sdk/lib/_internal/pub_generated/test/transformer/loads_a_transformer_defined_in_an_exported_library_test.dart
similarity index 67%
copy from sdk/lib/_internal/pub/test/transformer/loads_a_transformer_defined_in_an_exported_library_test.dart
copy to sdk/lib/_internal/pub_generated/test/transformer/loads_a_transformer_defined_in_an_exported_library_test.dart
index aab190047d9824f8649c3e6848941cf614bbe14e..a4435926074eabcbaf3f4fd525a69ea57cbb27b0 100644
--- a/sdk/lib/_internal/pub/test/transformer/loads_a_transformer_defined_in_an_exported_library_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/transformer/loads_a_transformer_defined_in_an_exported_library_test.dart
@@ -12,21 +12,16 @@ main() {
   initConfig();
   withBarbackVersions("any", () {
     integration("loads a transformer defined in an exported library", () {
-      d.dir(appPath, [
-        d.pubspec({
+      d.dir(appPath, [d.pubspec({
           "name": "myapp",
           "transformers": ["myapp"]
         }),
-        d.dir("lib", [
-          d.file("myapp.dart", "export 'src/transformer.dart';"),
-          d.dir("src", [
-            d.file("transformer.dart", REWRITE_TRANSFORMER)
-          ])
-        ]),
-        d.dir("web", [
-          d.file("foo.txt", "foo")
-        ])
-      ]).create();
+            d.dir(
+                "lib",
+                [
+                    d.file("myapp.dart", "export 'src/transformer.dart';"),
+                    d.dir("src", [d.file("transformer.dart", REWRITE_TRANSFORMER)])]),
+            d.dir("web", [d.file("foo.txt", "foo")])]).create();
 
       createLockFile('myapp', pkg: ['barback']);