Migrate first block of tests in standalone to standalone_2

tests/standalone/http_launch_data/http_isolate_main.dart

Index: tests/standalone/http_launch_data/http_isolate_main.dart
diff --git a/tests/standalone/http_launch_data/http_isolate_main.dart b/tests/standalone/http_launch_data/http_isolate_main.dart
deleted file mode 100644
index ad6306ab1e0da2f77e18121299b87450fe747314..0000000000000000000000000000000000000000
--- a/tests/standalone/http_launch_data/http_isolate_main.dart
+++ /dev/null
@@ -1,10 +0,0 @@
-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:isolate';
-
-main(List<String> args, SendPort replyTo) {
-  var data = args[0];
-  replyTo.send(data);
-}