Can I delete the meta_key and meta_value for mcc_copied

I’m using the Multisite Content Copier and the Cloner plugin, they’re great! I’m also doing a bunch of custom meta box creation and while I’ve been cleaning up my local dev database I’m noticing the mcc_copied with a value of 1.

I wondered if I can safely delete that from the database, it’s showing up in my list of custom fields and don’t want to confuse anyone that sees it in there.