Delete data in wp_postmeta?

Hi,
I’m going to deactivate and delete the Booster and Booster Plus plugins as I don’t need them anymore, but I see that they have about 10K meta_keys in the wp_postmeta table, i.e. _wcj_custom_product_tabs_content_local_1, _wcj_custom_product_tabs_title_local_1, etc. for tabs.

When I delete the plugin, do these old meta_keys get deleted? Or do I need to delete them myself with an SQL query? And how?

Thanks