I agree that this tag should be deleted it is clearly a meta tag.
To delete a tag that only appears a few times just remove it from every question. It then, being empty, will be auto-deleted within a day.
There is no dedicated way to delete a tag for users. For larger tags bring up the subject in this thread: Tag management 2017 (or the then current version).
Network-wide moderators can actually delete tags, and per-site moderators can at least replace at once and without bumps all occurrence of a given tag by a different one (which is sometimes sufficient to get rid of an undesirable tag).