Remove files that have already been ported or do not need to be ported.

client/html/src/NodeList.dart

Index: client/html/src/NodeList.dart
diff --git a/client/html/src/NodeList.dart b/client/html/src/NodeList.dart
deleted file mode 100644
index d5f403949ae5770fcfc95489d12cbb0bbc0447e6..0000000000000000000000000000000000000000
--- a/client/html/src/NodeList.dart
+++ /dev/null
@@ -1,11 +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.
-
-interface NodeList extends List<Node> {
-  NodeList filter(bool f(Node element));
-
-  NodeList getRange(int start, int length);
-
-  Node get first();
-}