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

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

Index: sdk/lib/_internal/pub_generated/test/get/hosted/stay_locked_if_compatible_test.dart
diff --git a/sdk/lib/_internal/pub/test/get/hosted/stay_locked_if_compatible_test.dart b/sdk/lib/_internal/pub_generated/test/get/hosted/stay_locked_if_compatible_test.dart
similarity index 58%
copy from sdk/lib/_internal/pub/test/get/hosted/stay_locked_if_compatible_test.dart
copy to sdk/lib/_internal/pub_generated/test/get/hosted/stay_locked_if_compatible_test.dart
index d8c29a41ffbad98e912331363c5cd2f2edf665e9..a5915b0b161c68319c873b08b7cabbe6dac76e7e 100644
--- a/sdk/lib/_internal/pub/test/get/hosted/stay_locked_if_compatible_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/get/hosted/stay_locked_if_compatible_test.dart
@@ -9,22 +9,32 @@ import '../../test_pub.dart';
 
 main() {
   initConfig();
-  integration("doesn't upgrade a locked pub server package with a new "
-      "compatible constraint", () {
+  integration(
+      "doesn't upgrade a locked pub server package with a new "
+          "compatible 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": "1.0.0"}).validate();
+    d.packagesDir({
+      "foo": "1.0.0"
+    }).validate();
   });
 }