Remove unneeded version.h include from drivers/uwb/

It was pointed out by 'make versioncheck' that a include of
linux/version.h is not needed in drivers/uwb/uwb-internal.h .
This patch removes it.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>