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

sdk/lib/_internal/pub_generated/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart

Index: sdk/lib/_internal/pub_generated/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart
diff --git a/sdk/lib/_internal/pub/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart b/sdk/lib/_internal/pub_generated/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart
similarity index 65%
copy from sdk/lib/_internal/pub/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart
copy to sdk/lib/_internal/pub_generated/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart
index 09d41bd9347bbd7102deebb68df7c86cbccf84b4..dc2812ddf33f11cb0b874d79253f0707527162e6 100644
--- a/sdk/lib/_internal/pub/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/serve/does_not_crash_if_an_unused_dart_file_has_a_syntax_error_test.dart
@@ -12,19 +12,19 @@ main() {
   initConfig();
   withBarbackVersions("any", () {
     integration("doesn't crash if an unused .dart file has a syntax error", () {
-      d.dir(appPath, [
-        d.pubspec({
+      d.dir(appPath, [d.pubspec({
           "name": "myapp",
           "transformers": ["myapp/src/transformer"]
         }),
-        d.dir("lib", [d.dir("src", [
-          d.file("transformer.dart", REWRITE_TRANSFORMER),
-          d.file("unused.dart", "(*&^#@")
-        ])]),
-        d.dir("web", [
-          d.file("foo.txt", "foo")
-        ])
-      ]).create();
+            d.dir(
+                "lib",
+                [
+                    d.dir(
+                        "src",
+                        [
+                            d.file("transformer.dart", REWRITE_TRANSFORMER),
+                            d.file("unused.dart", "(*&^#@")])]),
+            d.dir("web", [d.file("foo.txt", "foo")])]).create();
 
       createLockFile('myapp', pkg: ['barback']);