Move kernel baseline tests to front_end.

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

Index: pkg/front_end/test/fasta/rasta/typedef.dart
diff --git a/pkg/front_end/test/fasta/rasta/typedef.dart b/pkg/front_end/test/fasta/rasta/typedef.dart
deleted file mode 100644
index 37e26a6359a3ce64816e28bf3a638150d6089c55..0000000000000000000000000000000000000000
--- a/pkg/front_end/test/fasta/rasta/typedef.dart
+++ /dev/null
@@ -1,12 +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.
-
-typedef void Foo();
-
-main() {
-  print(Foo);
-  Foo = null;
-  Foo ??= null;
-  Foo();
-}