Drop unnecessary pledge(2) promises on apm(8):

Drop unnecessary pledge(2) promises on apm(8):

After we successfully connect to the unix socket created by apmd(8) all actions
occur over fds so we can drop only to pledge("stdio").

The code path in the case that the required action is GETSTATUS, and we couldn't
connect to the socket, then after open(2)/ioctl(2) the device /dev/apm directly
we can pledge("stdio") as well since from here on down we only need to
printf(3) messages.

OK deraadt@