Revert "Resolve metadata on library tags"

tests/lib/mirrors/library_metatarget_test_annotations_lib.dart

Index: tests/lib/mirrors/library_metatarget_test_annotations_lib.dart
diff --git a/tests/lib/mirrors/library_metatarget_test_annotations_lib.dart b/tests/lib/mirrors/library_metatarget_test_annotations_lib.dart
deleted file mode 100644
index 20fcfcf1017fb0a4d335623fb8174cd866aca8db..0000000000000000000000000000000000000000
--- a/tests/lib/mirrors/library_metatarget_test_annotations_lib.dart
+++ /dev/null
@@ -1,17 +0,0 @@
-// Copyright (c) 2013, 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.
-
-// Regression test for the combined use of metatargets and library tags.
-
-library annotations;
-
-class UsedOnlyOnLibrary {
-  const UsedOnlyOnLibrary();
-}
-const usedOnlyOnLibrary = const UsedOnlyOnLibrary();
-
-class Reflectable {
-  const Reflectable();
-}
-const Reflectable reflectable = const Reflectable();