Delete proxy and total samples, which have bit-rotted.

samples/total/client/Reader.dart

Index: samples/total/client/Reader.dart
===================================================================
--- samples/total/client/Reader.dart	(revision 9011)
+++ samples/total/client/Reader.dart	(working copy)
@@ -1,15 +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.
-
-class Reader {
-  Reader() { }
-
-  void loadFromString(Spreadsheet spreadsheet, String data) {
-    List<String> parts = StringUtils.split(data, StringUtils.NEWLINE);
-    loadSpreadsheet(spreadsheet, parts);
-  }
-
-  void loadSpreadsheet(Spreadsheet spreadsheet, List<String> data) { }
-}
-