[PATCH] mips: remove VR4181 support

There seem to be no more users or interest in the NEC Osprey evaluation
system for the NEC VR4181 SOC which is an old part anyway, so remove the
code.  More information on the Osprey can be found at
http://www.linux-mips.org/wiki/Osprey.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>