appletalk: Remove out of date message in printk

I accidentally triggered this printk, which amused me for a few moments.
Given we're post 2.2, we could just -EACCES, but does anyone even care about Appletalk now ?
I figure it's better to leave sleeping dogs lie, and just update the message.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>