Revert "Merge more Kernel infrastructure from kernel_sdk SDK fork."

tests/kernel/unsorted/string_buffer_test.dart

Index: tests/kernel/unsorted/string_buffer_test.dart
diff --git a/tests/kernel/unsorted/string_buffer_test.dart b/tests/kernel/unsorted/string_buffer_test.dart
deleted file mode 100644
index a89aee66e2ffd6335e5ecec5d9dbd06c4ed46ced..0000000000000000000000000000000000000000
--- a/tests/kernel/unsorted/string_buffer_test.dart
+++ /dev/null
@@ -1,9 +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 file.
-
-main() {
-  var sb = new StringBuffer();
-  sb.writeln('hello world :)');
-  print(sb);
-}