Remove unexpected character \ufeff

[saschanaz]

The comment line somehow had unexpected unicode character added by ff0b75e. Found via https://phabricator.services.mozilla.com/D220347#C8303474NL332

[jaraco]

Neato. Invisible characters.

Is there any chance this issue would have security consequences? It's kind-of a shame that GitHub doesn't make the diff visible. I still don't know where the character appears.

I suspect that commit was cherry-picked from CPython, so the same issue probably exists(ed) there.

[saschanaz]

I think that character is fine, it's just zero width joiner.

[jaraco]

I think I agree. I still worry about the impact these unintended changes have, so I've reached out to the original contributor in the linked commit. I've also filed an issue with ruff to consider checking for these changes to flag them sooner than later. Catching them two layers downstream is really painful to mitigate.