Remove dead markup serialization code.

sky/engine/core/dom/Node.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 37 matching lines @@
 #include "sky/engine/core/dom/StaticNodeList.h"
 #include "sky/engine/core/dom/TemplateContentDocumentFragment.h"
 #include "sky/engine/core/dom/Text.h"
 #include "sky/engine/core/dom/TreeScopeAdopter.h"
 #include "sky/engine/core/dom/UserActionElementSet.h"
 #include "sky/engine/core/dom/WeakNodeMap.h"
 #include "sky/engine/core/dom/shadow/ElementShadow.h"
 #include "sky/engine/core/dom/shadow/InsertionPoint.h"
 #include "sky/engine/core/dom/shadow/ShadowRoot.h"
 #include "sky/engine/core/editing/htmlediting.h"
-#include "sky/engine/core/editing/markup.h"
 #include "sky/engine/core/events/Event.h"
 #include "sky/engine/core/events/EventDispatchMediator.h"
 #include "sky/engine/core/events/EventDispatcher.h"
 #include "sky/engine/core/events/EventListener.h"
 #include "sky/engine/core/events/GestureEvent.h"
 #include "sky/engine/core/events/KeyboardEvent.h"
 #include "sky/engine/core/events/MouseEvent.h"
 #include "sky/engine/core/events/TextEvent.h"
 #include "sky/engine/core/events/TouchEvent.h"
 #include "sky/engine/core/events/UIEvent.h"
@@ skipping 1755 matching lines @@
         node->showTreeForThis();
 }
 
 void showNodePath(const blink::Node* node)
 {
     if (node)
         node->showNodePathForThis();
 }
 
 #endif