Default to compact Map/Set implementation.

tests/corelib/hash_map_internal_test.dart

Index: tests/corelib/hash_map_internal_test.dart
===================================================================
--- tests/corelib/hash_map_internal_test.dart	(revision 43834)
+++ tests/corelib/hash_map_internal_test.dart	(working copy)
@@ -1,27 +0,0 @@
-// Copyright (c) 2011, 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.
-
-// This copy of hash_map_test exercises the internal Map implementation. 
-// VMOptions=--use_internal_hash_map
-
-import "package:expect/expect.dart";
-
-// Test program for the HashMap class.
-
-class HashMapTest {
-
-  static testMain() {
-    var m = new Map();
-    Expect.equals(0, m.length);
-    Expect.equals(true, m.isEmpty);
-    m["one"] = 1;
-    Expect.equals(1, m.length);
-    Expect.equals(false, m.isEmpty);
-    Expect.equals(1, m["one"]);
-  }
-}
-
-main() {
-  HashMapTest.testMain();
-}