Fix UnboundLocalError: remove duplicate local import of REPAIR_ACTION_BY_NAME

backend/api/demo.py

@@ -203,7 +203,6 @@ async def execute_query_stream(req: ExecuteQueryRequest):
                 )
             else:
                 from rl.repair_strategies import RepairContext, get_repair_system_suffix, build_repair_user_message
-                from env.sql_env import REPAIR_ACTION_BY_NAME
 
                 # Bandit selects action
                 if ep.current_features is not None: