Remove unimplemented CUIScriptWnd::AddCallback overload.

Author: nitrocaster

src/xrGame/ui/UIScriptWnd.h

@@ -21,7 +21,6 @@ typedef CALLBACKS::iterator			CALLBACK_IT;
 			void				Register			(CUIWindow* pChild, LPCSTR name);
 								CUIDialogWndEx		();
 	virtual						~CUIDialogWndEx		();
-			void				AddCallback			(LPCSTR control_id, s16 event, const luabind::functor<void> &lua_function);
 			void				AddCallback			(LPCSTR control_id, s16 event, const luabind::functor<void> &functor, const luabind::object &object);
 	virtual void				Update				();
 	virtual bool				OnKeyboardAction			(int dik, EUIMessages keyboard_action);