How do I delete all tags?

Using Ghost
1

How do I bulk delete all tags in my Tag section. I imported an old blog from another site and didn’t realize that Ghost would automatically create tags that are just irrelevant. They’re mostly just garbage keywords. How do I bulk or mass delete all of them?

If there’s no option, is the only way to delete all content/posts?

2

Did you ever figure out how? Google search console seem to still see my deleted tags as 404 pages/links. Deleted them but they’re somehow still there.