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

sdk/lib/_internal/pub_generated/test/get/hosted/unlock_if_incompatible_test.dart

Index: sdk/lib/_internal/pub_generated/test/get/hosted/unlock_if_incompatible_test.dart
diff --git a/sdk/lib/_internal/pub/test/get/hosted/unlock_if_incompatible_test.dart b/sdk/lib/_internal/pub_generated/test/get/hosted/unlock_if_incompatible_test.dart
similarity index 59%
copy from sdk/lib/_internal/pub/test/get/hosted/unlock_if_incompatible_test.dart
copy to sdk/lib/_internal/pub_generated/test/get/hosted/unlock_if_incompatible_test.dart
index 77eeca6023a6fa7862e45ff46d212ef373751f5b..d1c2f2131ca20e03352a51ef920c00aa4baf20eb 100644
--- a/sdk/lib/_internal/pub/test/get/hosted/unlock_if_incompatible_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/get/hosted/unlock_if_incompatible_test.dart
@@ -9,20 +9,29 @@ import '../../test_pub.dart';
 
 main() {
   initConfig();
-  integration('upgrades a locked pub server package with a new incompatible '
-      'constraint', () {
+  integration(
+      'upgrades a locked pub server package with a new incompatible ' 'constraint',
+      () {
     servePackages((builder) => builder.serve("foo", "1.0.0"));
 
-    d.appDir({"foo": "any"}).create();
+    d.appDir({
+      "foo": "any"
+    }).create();
 
     pubGet();
 
-    d.packagesDir({"foo": "1.0.0"}).validate();
+    d.packagesDir({
+      "foo": "1.0.0"
+    }).validate();
     servePackages((builder) => builder.serve("foo", "1.0.1"));
-    d.appDir({"foo": ">1.0.0"}).create();
+    d.appDir({
+      "foo": ">1.0.0"
+    }).create();
 
     pubGet();
 
-    d.packagesDir({"foo": "1.0.1"}).validate();
+    d.packagesDir({
+      "foo": "1.0.1"
+    }).validate();
   });
 }