Revert "Update tests to pass on py3.11"

[hugovk]

This reverts commit b668852 as suggested in #528 (comment).

Replaces and closes #528.

Closes #526 as no longer needed.

[sirosen]

Thanks for this! I just did due diligence on 3.11.0b3 vs 3.11.0b4 and can confirm that this is a behavioral change on self.assertTrue(False) (for example) in unittest, and not just some weirdness injected by the nose2 tests.

Scanning/searching through the commits between those versions, I couldn't figure out the cause. But I'm not an expert in cpython's code, so it could easily be something "obvious" that I can't recognize.

So here's what I'm going to do:

• 🚀 merge this right now! 🚀
• ❓ post on discuss.python.org to ask if the change is intentional or if I should expect that it could change again
• 🧠 remember to be ready to revert-revert if this changes back in a later 3.11 version

I'll start looking through the other open PRs as soon as I get that discourse post up.

[sirosen]

For easy cross-linkage, here's the discourse post:
https://discuss.python.org/t/is-this-change-in-debug-ranges-between-3-11b3-and-3-11b4-intentional-expected/17409