Remove code to support Objective-C bindings

Source/core/dom/TreeWalker.h

Index: Source/core/dom/TreeWalker.h
diff --git a/Source/core/dom/TreeWalker.h b/Source/core/dom/TreeWalker.h
index f5bcf8199125e6f71e040a015120ca1fd323afeb..0fce42fb964922531ccffad8e6dfe8c8fd79a46a 100644
--- a/Source/core/dom/TreeWalker.h
+++ b/Source/core/dom/TreeWalker.h
@@ -53,16 +53,6 @@ namespace WebCore {
         Node* previousNode(ScriptState*);
         Node* nextNode(ScriptState*);
 
-        // Do not call these functions. They are just scaffolding to support the Objective-C bindings.
-        // They operate in the main thread normal world, and they swallow JS exceptions.
-        Node* parentNode() { return parentNode(scriptStateFromNode(mainThreadNormalWorld(), m_current.get())); }
-        Node* firstChild() { return firstChild(scriptStateFromNode(mainThreadNormalWorld(), m_current.get())); }
-        Node* lastChild() { return lastChild(scriptStateFromNode(mainThreadNormalWorld(), m_current.get())); }
-        Node* previousSibling() { return previousSibling(scriptStateFromNode(mainThreadNormalWorld(), m_current.get())); }
-        Node* nextSibling() { return nextSibling(scriptStateFromNode(mainThreadNormalWorld(), m_current.get())); }
-        Node* previousNode() { return previousNode(scriptStateFromNode(mainThreadNormalWorld(), m_current.get())); }
-        Node* nextNode() { return nextNode(scriptStateFromNode(mainThreadNormalWorld(), m_current.get())); }
-
     private:
         TreeWalker(PassRefPtr<Node>, unsigned whatToShow, PassRefPtr<NodeFilter>, bool expandEntityReferences);