ACF uses itself to display fields when editing a field group. You might be able to use an acf/render_field https://www.advancedcustomfields.com/resources/acf-render_field/ or an acf/prepare_field https://www.advancedcustomfields.com/resources/acfprepare_field/ filter to turn off the stylized UI on the field group editor page, but I have not tested this. I don’t have a problem with the field group editor having these slides as long as I can turn them off for the users of the site. After all, I’m the only one that’s going to be modifying field groups.
