Remove getNodesInCommand debug method from Editing commands

Source/core/editing/InsertIntoTextNodeCommand.cpp

Index: Source/core/editing/InsertIntoTextNodeCommand.cpp
diff --git a/Source/core/editing/InsertIntoTextNodeCommand.cpp b/Source/core/editing/InsertIntoTextNodeCommand.cpp
index d2ddc99502aa1a41278cf050f5aff149f0c4fb5e..cf6ffd2a0abda45fb9e7e828f52138c474b7a317 100644
--- a/Source/core/editing/InsertIntoTextNodeCommand.cpp
+++ b/Source/core/editing/InsertIntoTextNodeCommand.cpp
@@ -71,11 +71,4 @@ void InsertIntoTextNodeCommand::doUnapply()
     m_node->deleteData(m_offset, m_text.length(), IGNORE_EXCEPTION, DeprecatedAttachNow);
 }
 
-#ifndef NDEBUG
-void InsertIntoTextNodeCommand::getNodesInCommand(HashSet<Node*>& nodes)
-{
-    addNodeAndDescendants(m_node.get(), nodes);
-}
-#endif
-
 } // namespace WebCore