Disable / Remove meta fields for custom post type

Hi,

I have a custom post type “job_listing” with 50k posts. I have set the rankamth options for this custom post type to “noindex” and “no follow”. However, looking at the wp_postmeta table in phpmyadmin there are about 50-60 rankmath meta fields for each of these 50k posts. How Can I deactivate / remove these meta fields for this post type entirely?