Help me: how remove unused tags

Hi, I removed the tag "step" from all my repo documents, also from Archived Docs, but the tag is not removed fro my tag list. Coan you help me to resole this issue?
Many thanks,

Hi Alessandro,

Thank you for contributing again to the Prismic community,

Normally, if you repose the tags from all docs then the tag should disappear, to be able investigate this I would need your repository name (you can share in a private message if necessary).

Looking forward to your reply.