Remove getNodesInCommand debug method from Editing commands

Source/core/editing/RemoveNodeCommand.cpp

Index: Source/core/editing/RemoveNodeCommand.cpp
diff --git a/Source/core/editing/RemoveNodeCommand.cpp b/Source/core/editing/RemoveNodeCommand.cpp
index 8f269ef7b2ba85d70347e67be9c47ea10e6b988d..0640559a6dce1003aacea909a4c9a9eca6a8307f 100644
--- a/Source/core/editing/RemoveNodeCommand.cpp
+++ b/Source/core/editing/RemoveNodeCommand.cpp
@@ -65,13 +65,4 @@ void RemoveNodeCommand::doUnapply()
     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
-
 }