fix: improve maintenance and synchronize live conversations

backend/tests/api/test_token.py

@@ -17,17 +17,12 @@ limitations under the License.
 import pytest
 from fastapi import FastAPI
 from fastapi.testclient import TestClient
-from unittest.mock import MagicMock, patch, AsyncMock
+from unittest.mock import MagicMock, patch
 from uuid import uuid4
 from datetime import datetime, timezone
 import jwt
 
 from app.api import token as token_router
-from app.api.token import (
-    validate_api_key,
-    GenerateTokenRequest,
-    RevokeTokenRequest,
-)
 from app.database import get_db
 from app.core.security import CONVERSATION_SECRET_KEY, ALGORITHM