automation_api_router.py: remove superfluous imports

src/aare/daq/automation_api_router.py

@@ -1,11 +1,9 @@
 from __future__ import annotations
 
 import asyncio
-import json
-from typing import AsyncGenerator, TYPE_CHECKING
+from typing import AsyncGenerator
 
 from fastapi import APIRouter, Depends, HTTPException, status
-from pydantic import BaseModel, Field
 from starlette.responses import StreamingResponse
 
 from aare.common.automation_models import (
@@ -24,10 +22,9 @@ from aare.common.automation_queue_manager import (
     WorkflowRedisManager,
     build_default_steps,
 )
-from aare.common.automation_workflow import STATE_REGISTRY, HANDLER_REGISTRY
+
 from aare.daq.automation_runner import PersistentWorkflowRunner
 from aare.daq.auth import parse_token, check_jwt_rw, check_jwt_ro, oauth2_scheme
-from aare.common.models import TokenData
 from aare.daq.config import BeamlineConfig
 
 from aare.daq.automation_runner import AutomationLoop