Remove utf85_test for now. It's too slow.

tests/lib/convert/utf85_test.dart

Index: tests/lib/convert/utf85_test.dart
diff --git a/tests/lib/convert/utf85_test.dart b/tests/lib/convert/utf85_test.dart
deleted file mode 100644
index 3b5edc0528cff71e853bf0a1cb7f047103045982..0000000000000000000000000000000000000000
--- a/tests/lib/convert/utf85_test.dart
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright (c) 2012, 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.
-
-library utf8_test;
-import "package:expect/expect.dart";
-import 'dart:convert';
-
-main() {
-   for (int i = 0; i <= 0x10FFFF; i++) {
-     if (i == UNICODE_BOM_CHARACTER_RUNE) continue;
-     Expect.equals(i,
-        UTF8.decode(UTF8.encode(new String.fromCharCode(i))).runes.first);
-   }
-}