remove deleted import for worker

crawler/api/app.py

@@ -10,13 +10,6 @@ from typing import Annotated
 import uuid
 from api.auth import get_current_user
 from api.config import DEV_TIER_ORIGINS, PROD_TIER_ORIGINS
-from api.worker import (
-    DumpListingsWorker,
-    TaskStatus,
-    WorkerManager,
-    task_queue,
-    task_results,
-)
 from dotenv import load_dotenv
 from fastapi import Depends, FastAPI, HTTPException, Query
 from api.auth import User