Remove chromecast::InitializeWebUI() not used any more.

chromecast/browser/webui/webui_cast_simple.cc

Index: chromecast/browser/webui/webui_cast_simple.cc
diff --git a/chromecast/browser/webui/webui_cast_simple.cc b/chromecast/browser/webui/webui_cast_simple.cc
deleted file mode 100644
index 255c1d8de26957ab65aeffb8b225a0e235f9cb77..0000000000000000000000000000000000000000
--- a/chromecast/browser/webui/webui_cast_simple.cc
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright 2014 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.
-
-#include "chromecast/browser/webui/webui_cast.h"
-
-namespace chromecast {
-namespace shell {
-
-void InitializeWebUI() {
-  // Intentional no-op for public cast_shell build.
-}
-
-}  // namespace shell
-}  // namespace chromecast