Help for "delete" should indicate revocation not necessary

[jsha]

Many people are of the belief that they need to revoke certificates before deleting them. We should include guidance on the "delete" subcommand (or perhaps the "revoke" subcommand?) that revocation is not necessary unless there's been a key compromise. See https://community.letsencrypt.org/t/150-sites-split-over-7-certificates-how-to-plan-for-renewals/44180/25 for an example.

[stale[bot]]

We've made a lot of changes to Certbot since this issue was opened. If you still have this issue with an up-to-date version of Certbot, can you please add a comment letting us know? This helps us to better see what issues are still affecting our users. If there is no activity in the next 30 days, this issue will be automatically closed.

[github-actions[bot]]

We've made a lot of changes to Certbot since this issue was opened. If you still have this issue with an up-to-date version of Certbot, can you please add a comment letting us know? This helps us to better see what issues are still affecting our users. If there is no activity in the next 30 days, this issue will be automatically closed.

[github-actions[bot]]

This issue has been closed due to lack of activity, but if you think it should be reopened, please open a new issue with a link to this one and we'll take a look.