Migrate first block of tests in standalone to standalone_2

tests/standalone/dart_developer_disabled_env_test.dart

Index: tests/standalone/dart_developer_disabled_env_test.dart
diff --git a/tests/standalone/dart_developer_disabled_env_test.dart b/tests/standalone/dart_developer_disabled_env_test.dart
deleted file mode 100644
index 1d9653baa416135411786edda9b9b1d686d6cf21..0000000000000000000000000000000000000000
--- a/tests/standalone/dart_developer_disabled_env_test.dart
+++ /dev/null
@@ -1,11 +0,0 @@
-// Copyright (c) 2017, 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.
-// VMOptions=--no_causal_async_stacks
-
-import "package:expect/expect.dart";
-
-main() {
-  Expect.isFalse(
-      const bool.fromEnvironment('dart.developer.causal_async_stacks'));
-}