refactor: remove unused code

tests/test_utils.py

@@ -108,15 +108,6 @@ class TestUtils(ApiServerUnittest):
         functions_mapping["type_match"]({}, "dict")
         functions_mapping["type_match"]({"a": 1}, "dict")
 
-    def test_deep_update_dict(self):
-        origin_dict = {'a': 1, 'b': {'c': 3, 'd': 4}, 'f': 6, 'h': 123}
-        override_dict = {'a': 2, 'b': {'c': 33, 'e': 5}, 'g': 7, 'h': None}
-        updated_dict = utils.deep_update_dict(origin_dict, override_dict)
-        self.assertEqual(
-            updated_dict,
-            {'a': 2, 'b': {'c': 33, 'd': 4, 'e': 5}, 'f': 6, 'g': 7, 'h': 123}
-        )
-
     def test_handle_config_key_case(self):
         origin_dict = {
             "Name": "test",