diff --git a/sql/item_subselect.cc b/sql/item_subselect.cc
index e6c86ea0303..bdf510e7fa5 100644
--- a/sql/item_subselect.cc
+++ b/sql/item_subselect.cc
@@ -758,34 +758,6 @@ bool Item_subselect::unknown_splocal_processor(void *argument)
 }
 
 
-static
-int walk_table_functions_for_list(Item_processor processor,
-                                  bool walk_subquery, void *argument,
-                                  List<TABLE_LIST>& join_list)
-{
-  List_iterator<TABLE_LIST> li(join_list);
-  int res;
-  while (TABLE_LIST *table= li++)
-  {
-    if (Table_function_json_table *tf= table->table_function)
-    {
-      if ((res= tf->walk_items(processor, walk_subquery, argument)))
-      {
-        return res;
-      }
-    }
-    if (table->nested_join)
-    {
-      if ((res= walk_table_functions_for_list(processor, walk_subquery,
-                                              argument,
-                                              table->nested_join->join_list)))
-        return res;
-    }
-  }
-  return 0;
-}
-
-
 bool Item_subselect::walk(Item_processor processor, bool walk_subquery,
                           void *argument)
 {