Fix new rule in flake8 7.2.0 breaking pipeline

sohstationviewer/conf/dbSettings.py

@@ -30,7 +30,6 @@ def modify_db_path():
         from sohstationviewer.conf.dbSettings import modify_db_path
         modify_db_path()
     """
-    global dbConf
     current_file_path = os.path.abspath(__file__)
     root = Path(current_file_path).parent.parent
     db_path = [x for x in root.glob('**/soh.db')][0]