alpha: core_lca: take the unused functions out

the only user had been drivers/char/h8.c, and that got taken out
and shot back in 2004...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Acked-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>