wizard: do not use on storage object during wallet creation

electrum/storage.py

@@ -102,20 +102,6 @@ class JsonDB(PrintError):
                 self.modified = True
                 self.data.pop(key)
 
-    def get_all_data(self) -> dict:
-        with self.db_lock:
-            return copy.deepcopy(self.data)
-
-    def overwrite_all_data(self, data: dict) -> None:
-        try:
-            json.dumps(data, cls=util.MyEncoder)
-        except:
-            self.print_error(f"json error: cannot save {repr(data)}")
-            return
-        with self.db_lock:
-            self.modified = True
-            self.data = copy.deepcopy(data)
-
     @profiler
     def write(self):
         with self.db_lock: