staging: unisys: cleanup UNISYS_VISORUTIL

Commit 53490b545cb0 ("staging: unisys: move periodic_work.c into the
visorbus directory") removed the Kconfig option UNISYS_VISORUTIL, but
left one reference in a Kconfig select.  Remove this last reference.

Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/unisys/visorchannel/Kconfig

@@ -4,7 +4,6 @@
 
 config UNISYS_VISORCHANNEL
 	tristate "Unisys visorchannel driver"
-	select UNISYS_VISORUTIL
 	---help---
 	If you say Y here, you will enable the Unisys visorchannel driver.