s390/Kconfig: pedantic cleanups

Formatting of Kconfig files doesn't look so pretty, so just
take damp cloth and clean it up.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

drivers/s390/char/Kconfig

@@ -205,4 +205,3 @@ config S390_VMUR
 	depends on S390
 	help
 	  Character device driver for z/VM reader, puncher and printer.
-