The button is controlled by Client Config > Retail tab > Retail Menu AI Upload (show the "Update Stock with AI" button) (Yes/No, default Yes; requires the retail module). Set it to No to hide the buttons on the Retail Menu pages and disable the upload endpoints (attempts then fail with The AI stock upload is not enabled for this account.). You also need the Edit Retail Menus permission and an active kitchen selected, otherwise the endpoints answer You do not have permission to update retail stock. / No active reseller.