fix(rare): remove loath->loathe, as loath is as common as loathe

[corneliusroemer]

resolves #3522

I committed a false positive when checking Python peps because loath was rewritten to loathe and I wasn't aware that loath is a thing. It's the adjective, whereas loathe is a verb.

Per Google ngram, loath is as common as loathe, so it shouldn't be a clear rewrite. It should simply be removed as it's not a clear typo nor is one much more common than the other.

https://books.google.com/ngrams/graph?content=loath%2Cloathe&year_start=1800&year_end=2022&corpus=en&smoothing=3

See https://github.com/python/peps/commit/ee430d694f88eff4181e9c06d28104b4697d9cfe where this happened live.

https://github.com/codespell-project/codespell/blame/f0695997de58d3b9c790a940cbb94e14640bdc97/codespell_lib/data/dictionary_rare.txt#L162

[DimitriPapadopoulos]

Thank you @corneliusroemer.