Move kernel baseline tests to front_end.

pkg/front_end/test/fasta/rasta/supports_reflection.dart

Index: pkg/front_end/test/fasta/rasta/supports_reflection.dart
diff --git a/pkg/front_end/test/fasta/rasta/supports_reflection.dart b/pkg/front_end/test/fasta/rasta/supports_reflection.dart
deleted file mode 100644
index d14efa0611ebb0c84901597e5c19f0b08ac31bf0..0000000000000000000000000000000000000000
--- a/pkg/front_end/test/fasta/rasta/supports_reflection.dart
+++ /dev/null
@@ -1,7 +0,0 @@
-// Copyright (c) 2016, 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.md file.
-
-main() {
-  print(const bool.fromEnvironment("dart.library.mirrors"));
-}