TinyBSD to be removed

From: Warner Losh <imp_at_bsdimp.com>
Date: Tue, 14 Dec 2021 22:27:29 UTC
TinyBSD hasn't been updated in about a decade. The last commits in the
google code site were in 2011. The kernel configs are full of removed
devices and don't have the required changes from the past 10ish years.

I plan on removing it. Please comment on https://reviews.freebsd.org/D33450