Revert "fix moot using a dummy Recaptcha key on several pages"

This reverts commit 74f270c3afa2daf8f64ea75d5f02752822a08579.
Looks like moot has fixed the problem, so we won't need this anymore.
Revert "Fix captchas, again. #1531"

This reverts commit fd703d42bad855d9e103ecbdb2628fcef94b9651.

Conflicts:
	CHANGELOG.md
update CHANGELOG
Release 4chan X v1.7.22.