fix: remove unused parameter

Author: ESnark

mcpgateway/main.py

@@ -5148,7 +5148,7 @@ async def cleanup_import_statuses(max_age_hours: int = 24, user=Depends(get_curr
 
     # Redirect root path to admin UI
     @app.get("/")
-    async def root_redirect(request: Request):
+    async def root_redirect():
         """
         Redirects the root path ("/") to "/admin/".