fix: Remove DatabaseManager heath-check from RestAPI service

autogpt_platform/backend/backend/server/rest_api.py

@@ -14,7 +14,6 @@ from autogpt_libs.feature_flag.client import (
     shutdown_launchdarkly,
 )
 from autogpt_libs.logging.utils import generate_uvicorn_config
-from autogpt_libs.utils.cache import thread_cached
 from fastapi.exceptions import RequestValidationError
 from fastapi.routing import APIRoute
 
@@ -220,19 +219,8 @@ app.include_router(
 app.mount("/external-api", external_app)
 
 
-@thread_cached
-def get_db_async_client():
-    from backend.executor import DatabaseManagerAsyncClient
-
-    return backend.util.service.get_service_client(
-        DatabaseManagerAsyncClient,
-        health_check=False,
-    )
-
-
 @app.get(path="/health", tags=["health"], dependencies=[])
 async def health():
-    await get_db_async_client().health_check_async()
     return {"status": "healthy"}