gh-122555: Remove removed functions from Doc/data/refcounts.dat

[picnixz]

Generated using the following script:

while read -r pat ; do grep -m1 -q -F $pat -r . --include='*.[ch]' || echo $pat
done < <(cut -d: -f1 "Doc/data/refcounts.dat" | grep -v '#' | sort -u | tr -d ' ')

You can do a grep on the sources if you want to be sure that there are not occurrences remaining (except in docs).

• Issue: [cleanup] Remove removed functions from Doc/data/refcounts.dat #122555

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📚 Documentation preview 📚: https://cpython-previews--122556.org.readthedocs.build/

[vstinner]

Merged, thanks.