Remove hard limit from mirrors accessor caches.

tests/compiler/dart2js_native/lru_test.dart

Index: tests/compiler/dart2js_native/lru_test.dart
diff --git a/tests/compiler/dart2js_native/lru_test.dart b/tests/compiler/dart2js_native/lru_test.dart
deleted file mode 100644
index f5c5200269ec01324dc89096319549ad1e891cd8..0000000000000000000000000000000000000000
--- a/tests/compiler/dart2js_native/lru_test.dart
+++ /dev/null
@@ -1,10 +0,0 @@
-// Copyright (c) 2014, 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.
-
-import "dart:_internal" show LRUMap;
-import "../../lib/mirrors/lru_expect.dart";
-
-main() {
-  expect((shift) => new LRUMap.withShift(shift));
-}