In order to remove Gelato delivery profiles from your Etsy store, you will need to do so manually from Etsy.
Note: Please note that Gelato shipping profiles are not automatically removed after you uninstall the Gelato app.
You can find Gelato delivery profiles in your Etsy Shop Manager under Settings > Delivery settings > Delivery profiles.
You can click on the bin-shaped delete button to remove Gelato delivery profiles on this page.
You can read more about Etsy delivery profiles in Etsy's Help Center here.