Remove labels lifecycle/stale and lifecycle/rotten

[umarcor]

As commented in #1908, we should remove lifecycle/stale and lifecycle/rotten.

[marckhouzam]

Can I just do that blindly? I assume it will remove those labels from every existing issues and PRs? What about the ones closed by the bot?

[umarcor]

Yes, that will remove labels from existing issues an PRs. The ones closed by the bot will remain closed. I don't know how can we identify them. Maybe manually checking label:lifecycle/stale sort:updated-desc is:closed and label:lifecycle/rotten sort:updated-desc is:closed ?

[marckhouzam]

I've reopened two PRs that had been closed by the bot and deleted the lifecycle/rotten and lifecycle/state labels.