Chore: simplify jasyncio

[dimaqq]

Description

Use native asyncio primitives instead of re-exporting them via jasyncio.

See e.g. https://github.com/juju/python-libjuju/pull/1097/files#diff-41d205b5da01238d45d1bf3e3ba62df2bf78aad615c58f391787cecbdf7e4e08

Urgency

Casually wishlisting

Code I'd Like to Run

...

[EdmilsonRodrigues]

Hello, I am new here and I want to contribute, I just read the CONTRIBUTING.md, and I'm with this doubt, can I take this one? Is there another one that might need help from new or good first issues?

[dimaqq]

Anyone can take this one, PRs are always welcome.

Given that juju.jasyncio.abc could have been used by library users, a proper fix may look something like this:

• keep juju/jasyncio.py, don't use it, let it issue a deprecation warning is imported
• move the few unique functions to another file, e.g. juju/_jasyncio.py and update the code that uses those functions
• update the code that uses e.g. jasyncio.sleep() to asyncio.sleep()

[EdmilsonRodrigues]

Can we already close this one?

[dimaqq]

Yep, it's done