Remove dead poweroff functions, as they not appear in other
authorjan <jan@openbsd.org>
Wed, 1 Sep 2021 09:29:31 +0000 (09:29 +0000)
committerjan <jan@openbsd.org>
Wed, 1 Sep 2021 09:29:31 +0000 (09:29 +0000)
commitb8ecec8952a7a87373f5f700757d1fed66263c82
tree361a9e9fd011a9c21cb9dffe8e2a3d0a9d0df758
parentc13ff7ac6c9d7ada6c41f3c3e389cb815654d94e
Remove dead poweroff functions, as they not appear in other
serial drivers.

ok patrick@
sys/dev/fdt/exuart.c
sys/dev/fdt/imxuart.c
sys/dev/ic/pluart.c