gh-127949: add docs for asyncio policy deprecation

[kumaraditya303]

• Issue: Deprecate asyncio policy system #127949

---

📚 Documentation preview 📚: https://cpython-previews--128269.org.readthedocs.build/

[picnixz]

LGTM. If you want to add .. deprecated to every class and functions you mentioned, you can do it but since you deprecated the entire module in one go, I don't know if it's worth it or not. The only reason why I would suggest this is for users that do an online search and for IDEs that render Python docs based on the remote docs and that would miss the top-level warning.

[kumaraditya303]

If you want to add .. deprecated to every class and functions you mentioned, you can do it but since you deprecated the entire module in one go, I don't know if it's worth it or not.

That was already done as part of individual PRs.

[picnixz]

Perfect! (sorry since the diff didn't show it I wasn't aware of; I thought you waited for those changes actually or I didn't remember this). My approval remains then.