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

sdk/lib/_internal/pub_generated/test/transformer/configuration/with_configuration_only_instantiates_configurable_transformers_test.dart

Index: sdk/lib/_internal/pub_generated/test/transformer/configuration/with_configuration_only_instantiates_configurable_transformers_test.dart
diff --git a/sdk/lib/_internal/pub/test/transformer/configuration/with_configuration_only_instantiates_configurable_transformers_test.dart b/sdk/lib/_internal/pub_generated/test/transformer/configuration/with_configuration_only_instantiates_configurable_transformers_test.dart
similarity index 65%
copy from sdk/lib/_internal/pub/test/transformer/configuration/with_configuration_only_instantiates_configurable_transformers_test.dart
copy to sdk/lib/_internal/pub_generated/test/transformer/configuration/with_configuration_only_instantiates_configurable_transformers_test.dart
index 3bce3bbc245503a6629b3faf49f0c9ecc9f36d0c..db40874dd9ebd4bc606021eeea26cb4b4f843d07 100644
--- a/sdk/lib/_internal/pub/test/transformer/configuration/with_configuration_only_instantiates_configurable_transformers_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/transformer/configuration/with_configuration_only_instantiates_configurable_transformers_test.dart
@@ -49,29 +49,28 @@ class RewriteTransformer extends Transformer {
 main() {
   initConfig();
   withBarbackVersions("any", () {
-     integration("with configuration, only instantiates configurable "
-         "transformers", () {
-       var configuration = {"param": ["list", "of", "values"]};
-
-       d.dir(appPath, [
-         d.pubspec({
-           "name": "myapp",
-           "transformers": [{"myapp/src/transformer": configuration}]
-         }),
-         d.dir("lib", [d.dir("src", [
-           d.file("transformer.dart", transformer)
-         ])]),
-         d.dir("web", [
-           d.file("foo.txt", "foo")
-         ])
-       ]).create();
-
-       createLockFile('myapp', pkg: ['barback']);
-
-       var server = pubServe();
-       requestShouldSucceed("foo.json", JSON.encode(configuration));
-       requestShould404("foo.out");
-       endPubServe();
-     });
+    integration(
+        "with configuration, only instantiates configurable " "transformers",
+        () {
+      var configuration = {
+        "param": ["list", "of", "values"]
+      };
+
+      d.dir(appPath, [d.pubspec({
+          "name": "myapp",
+          "transformers": [{
+              "myapp/src/transformer": configuration
+            }]
+        }),
+            d.dir("lib", [d.dir("src", [d.file("transformer.dart", transformer)])]),
+            d.dir("web", [d.file("foo.txt", "foo")])]).create();
+
+      createLockFile('myapp', pkg: ['barback']);
+
+      var server = pubServe();
+      requestShouldSucceed("foo.json", JSON.encode(configuration));
+      requestShould404("foo.out");
+      endPubServe();
+    });
   });
-}
+}