Clean up some pub and scheduled_test integration with the new isolate API.

pkg/scheduled_test/test/scheduled_test/abort_test.dart

Index: pkg/scheduled_test/test/scheduled_test/abort_test.dart
diff --git a/pkg/scheduled_test/test/scheduled_test/abort_test.dart b/pkg/scheduled_test/test/scheduled_test/abort_test.dart
index d41632fcd9743729d4090f778572e62ad0d1dbe0..fc4622c28cd530cd7434e1d8a55a353db95dc306 100644
--- a/pkg/scheduled_test/test/scheduled_test/abort_test.dart
+++ b/pkg/scheduled_test/test/scheduled_test/abort_test.dart
@@ -9,8 +9,8 @@ import 'package:scheduled_test/scheduled_test.dart';
 import '../metatest.dart';
 import '../utils.dart';
 
-void main(List<String> args, message) {
-  metaTestInit(message);
+void main(_, message) {
+  initMetatest(message);
 
   setUpTimeout();