Update app.py

app.py

@@ -3,10 +3,9 @@ import psycopg2
 from openai import OpenAI
 import json
 import os
-from typing import List, Dict, Tuple, Any
+from typing import List, Dict
 from pgvector.psycopg2 import register_vector
 import numpy as np
-from datetime import datetime, timezone, timedelta
 
 # 가중치 및 임계값 설정
 DEFAULT_FULL_WEIGHT = 0.2