Refactor fn2.dart, since it breached our 1000-line threshold.

sky/examples/fn2/hello_fn2.dart

Index: sky/examples/fn2/hello_fn2.dart
diff --git a/sky/examples/fn2/hello_fn2.dart b/sky/examples/fn2/hello_fn2.dart
deleted file mode 100644
index 1aeda5d2ebc12d0dc5ab9d17586b64f0e99118af..0000000000000000000000000000000000000000
--- a/sky/examples/fn2/hello_fn2.dart
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:sky/framework/fn2.dart';
-
-class HelloWorldApp extends App {
-  UINode build() {
-    return new Text('Hello, fn2!');
-  }
-}
-
-void main() {
-  new HelloWorldApp();
-}