These paths receive (literally) zero traffic, and they require the WFE
to duplicate the RA's authorization lifetime configuration. Since that
configuration is now per-profile, the WFE can no longer easily replicate
it, and the resulting staleness calculations will be wrong. Remove the
duplicated configuration, remove the unused endpoints that rely on it,
and remove the staleness-checking code which supported those endpoints.
Leave the non-ACME /get/ endpoint for certificates in place, because
checking staleness for those does not require any additional
configuration, and having a non-ACME serial-based API for certificates
is a good thing.
Fixes https://github.com/letsencrypt/boulder/issues/8007
eab90ee2f5