Revert "Resolve metadata on library tags"

tests/lib/mirrors/library_metatarget_test_lib.dart

Index: tests/lib/mirrors/library_metatarget_test_lib.dart
diff --git a/tests/lib/mirrors/library_metatarget_test_lib.dart b/tests/lib/mirrors/library_metatarget_test_lib.dart
deleted file mode 100644
index 3732f926a90694bc803c7f946e3913cd75248d29..0000000000000000000000000000000000000000
--- a/tests/lib/mirrors/library_metatarget_test_lib.dart
+++ /dev/null
@@ -1,15 +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.
-
-@usedOnlyOnLibrary
-library subLib;
-
-import 'library_metatarget_test_annotations_lib.dart';
-
-class A {
-  @reflectable var reflectableField = 1;
-  var nonreflectableField = 2;
-}