Remove support for 'dart:scalarlist' in the Dart VM.

sdk/lib/scalarlist/scalarlist_sources.gypi

Index: sdk/lib/scalarlist/scalarlist_sources.gypi
===================================================================
--- sdk/lib/scalarlist/scalarlist_sources.gypi	(revision 20600)
+++ sdk/lib/scalarlist/scalarlist_sources.gypi	(working copy)
@@ -1,11 +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.
-
-{
-  'sources': [
-    'scalarlist.dart',
-    # The above file needs to be first as it lists the parts below.
-    'byte_arrays.dart',
-  ],
-}