PEP 554: Convert unreferenced footnote to bullet point

[hugovk]

Fix this warning:

pep-0554.rst:1335: WARNING: Citation [petr-c-ext] is not referenced.

The reference to the footnote was removed in #3067, let's also remove the footnote itself. Alternatively, we could convert it a bulleted footnote, there's already a couple of those.

Also remove redundant emacs metadata.

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📚 Documentation preview 📚: https://pep-previews--3189.org.readthedocs.build/pep-0554/

[ericsnowcurrently]

I'd rather leave the links in the document. Is there a way we can do so without getting a warning? Some sort of "Related Resources" section?

[AA-Turner]

We could disable citation referencing warnings, though that is a whole-project setting.

Alternativley, this document already has mp-conn and main-thread at the bottom of the citations list which aren't marked up as citations, as they have no references -- perhaps we could convert petr-c-ext to that format?

A

[hugovk]

Yes, we can definitely turn it into a regular bullet point, I'll update the PR 👍

[ericsnowcurrently]

LGTM

Thanks!