removed unused session manager on onboarding endpoint

src/api/settings.py

@@ -233,7 +233,7 @@ async def update_settings(request, session_manager):
         )
 
 
-async def onboarding(request, session_manager, flows_service):
+async def onboarding(request, flows_service):
     """Handle onboarding configuration setup"""
     try:
         # Get current configuration

src/main.py

@@ -915,7 +915,6 @@ async def create_app():
             require_auth(services["session_manager"])(
                 partial(
                     settings.onboarding, 
-                    session_manager=services["session_manager"],
                     flows_service=services["flows_service"]
                 )
             ),