staging: unisys: remove unused locking functions in timskmod.h

Delete a block of unused locking functions from timskmod.h. These
functions generated a lot of checkpatch warnings and were not being used
anyhow.

Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>