Remove getNodesInCommand debug method from Editing commands

Source/core/editing/RemoveNodeCommand.cpp

 /*
  * Copyright (C) 2005, 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 47 matching lines @@
 void RemoveNodeCommand::doUnapply()
 {
     RefPtr<ContainerNode> parent = m_parent.release();
     RefPtr<Node> refChild = m_refChild.release();
     if (!parent || !parent->rendererIsEditable())
         return;
 
     parent->insertBefore(m_node.get(), refChild.get(), IGNORE_EXCEPTION);
 }
 
-#ifndef NDEBUG
-void RemoveNodeCommand::getNodesInCommand(HashSet<Node*>& nodes)
-{
-    addNodeAndDescendants(m_parent.get(), nodes);
-    addNodeAndDescendants(m_refChild.get(), nodes);
-    addNodeAndDescendants(m_node.get(), nodes);
 }
-#endif
-
-}