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

sdk/lib/_internal/pub_generated/test/get/git/doesnt_fetch_if_nothing_changes_test.dart

Index: sdk/lib/_internal/pub_generated/test/get/git/doesnt_fetch_if_nothing_changes_test.dart
diff --git a/sdk/lib/_internal/pub/test/get/git/doesnt_fetch_if_nothing_changes_test.dart b/sdk/lib/_internal/pub_generated/test/get/git/doesnt_fetch_if_nothing_changes_test.dart
similarity index 66%
copy from sdk/lib/_internal/pub/test/get/git/doesnt_fetch_if_nothing_changes_test.dart
copy to sdk/lib/_internal/pub_generated/test/get/git/doesnt_fetch_if_nothing_changes_test.dart
index 54cd98c62e249139c31d33629878c382d0868699..c776a751131ae1a23a83643414991bbe57b5dc51 100644
--- a/sdk/lib/_internal/pub/test/get/git/doesnt_fetch_if_nothing_changes_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/get/git/doesnt_fetch_if_nothing_changes_test.dart
@@ -16,23 +16,23 @@ main() {
   integration("doesn't re-fetch a repository if nothing changes", () {
     ensureGit();
 
-    var repo = d.git('foo.git', [
-      d.libDir('foo'),
-      d.libPubspec('foo', '1.0.0')
-    ]);
+    var repo =
+        d.git('foo.git', [d.libDir('foo'), d.libPubspec('foo', '1.0.0')]);
     repo.create();
 
     d.appDir({
-      "foo": {"git": {"url": "../foo.git"}}
+      "foo": {
+        "git": {
+          "url": "../foo.git"
+        }
+      }
     }).create();
 
     pubGet();
 
-    d.dir(packagesPath, [
-      d.dir('foo', [
-        d.file('foo.dart', 'main() => "foo";')
-      ])
-    ]).validate();
+    d.dir(
+        packagesPath,
+        [d.dir('foo', [d.file('foo.dart', 'main() => "foo";')])]).validate();
 
     // Delete the repo. This will cause "pub get" to fail if it tries to
     // re-fetch.
@@ -40,10 +40,8 @@ main() {
 
     pubGet();
 
-    d.dir(packagesPath, [
-      d.dir('foo', [
-        d.file('foo.dart', 'main() => "foo";')
-      ])
-    ]).validate();
+    d.dir(
+        packagesPath,
+        [d.dir('foo', [d.file('foo.dart', 'main() => "foo";')])]).validate();
   });
 }