Move kernel baseline tests to front_end.

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

Index: pkg/front_end/test/fasta/rasta/malformed_const_constructor.dart
diff --git a/pkg/front_end/test/fasta/rasta/malformed_const_constructor.dart b/pkg/front_end/test/fasta/rasta/malformed_const_constructor.dart
deleted file mode 100644
index 05cfa9902cacfd386a59c8725f3f5415c623b8e6..0000000000000000000000000000000000000000
--- a/pkg/front_end/test/fasta/rasta/malformed_const_constructor.dart
+++ /dev/null
@@ -1,15 +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.
-
-class A {
-  const A()
-    : x = 'foo'
-    : x = 'foo'
-    ;
-}
-
-main() {
-  const A();
-  new A();
-}