Man pages matching name mq_unlink in section 2:

mq_unlink.2.en	debian 10 / manpages-dev
mq_unlink.2.ja	debian 10 / manpages-ja-dev
mq_unlink.2.en	debian 11 / manpages-dev
mq_unlink.2.fr	debian 11 / manpages-fr-dev
mq_unlink.2.ja	debian 11 / manpages-ja-dev
mq_unlink.2.de	debian 12 / manpages-de-dev
mq_unlink.2.en	debian 12 / manpages-dev
mq_unlink.2.fr	debian 12 / manpages-fr-dev
mq_unlink.2.ja	debian 12 / manpages-ja-dev
mq_unlink.2.ru	debian 12 / manpages-ru-dev