Revisit `getopt` and `optparse` soft deprecations

[ncoghlan]

Duplicate of #126180

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(Based on @serhiy-storchaka's Discourse thread at https://discuss.python.org/t/getopt-and-optparse-vs-argparse/69618 ).

I'm going to draft a PR for this, and wanted an issue number for the NEWS entry.

The PR will be initially marked as DO-NOT-MERGE, as this feels like a change that needs an explicit +1 from the next SC (since we'd be reversing a deprecation that come from a previously approved PEP: https://peps.python.org/pep-0389/#deprecation-of-optparse)

Interestingly, the deprecation notice in getopt goes against the contents of PEP 389 ("The getopt module will not be deprecated. However, its documentation will be updated to point to argparse in a couple of places.")

Linked PRs

• gh-126180: Remove getopt and optparse deprecation notices #126227

[ncoghlan]

The getopt deprecation was added in #106535 for Python 3.13 (as I discovered when looking at What's New while drafting a PR)

[zware]

See also gh-126180/GH-126186.

[ncoghlan]

D'oh! Those hadn't been mentioned in the Discourse thread, and I forgot to check GitHub itself.

[ncoghlan]

Duplicate of #126180