datetime: Remove unused stubtest allowlist entry for py312

[sobolevn]

I don't quite understand what is the case with __all__ here. So, I want to see the results.
Related python/cpython#104920

This will be fixed automatically when this new commit by @hauntsaninja is released.

[AlexWaygood]

Waiting for:

• [versions-manifest] Update for release from 06/21/2023 actions/python-versions#235

[AlexWaygood]

We're using the latest beta of Python 3.12 in CI now, but the CI is still failing on this PR -- @sobolevn, looks like some updates might need to be made to datetime.pyi?

[sobolevn]

Hm, I don't think so:

1. Source: https://github.com/python/cpython/blob/3.12/Lib/datetime.py#L8-L9 ("date", "datetime", "time", "timedelta", "timezone", "tzinfo", "MINYEAR", "MAXYEAR") (no "UTC")
2. Stubs: https://github.com/python/typeshed/blob/main/stdlib/datetime.pyi#L8 ("date", "datetime", "time", "timedelta", "timezone", "tzinfo", "MINYEAR", "MAXYEAR" , "UTC")

Looks like python/cpython#104920 was not backported to 3.12.

[AlexWaygood]

Looks like python/cpython#104920 was not backported to 3.12.

I've triggered a backport for that PR (python/cpython#106019), but I'll wait a little bit to check that Paul doesn't object before merging it :)

Assuming he doesn't, we can hopefully get it into the next 3.12 beta.

[srittau]

The backport has now been merged, so this should be fixed in the next beta.