Replace absolute imports with relative imports

src/accounting/utils/query.py

@@ -1,7 +1,7 @@
 # The Mia! Accounting Project.
 # Author: imacat@mail.imacat.idv.tw (imacat), 2023/1/25
 
-#  Copyright (c) 2023 imacat.
+#  Copyright (c) 2023-2026 imacat.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
@@ -21,8 +21,6 @@ This module should not import any other module from the application.
 """
 import re
 
-from typing_extensions import assert_type
-
 
 def parse_query_keywords(q: str | None) -> list[str]:
     """Returns the query keywords by the query parameter.