staging: remove version.h include from dgrp/dgrp_sysfs.c

The file uses nothing from linux/version.h, so the include is
pointless - remove it.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/dgrp/dgrp_sysfs.c

@@ -17,7 +17,6 @@
 #include "dgrp_common.h"
 
 #include <linux/kernel.h>
-#include <linux/version.h>
 #include <linux/module.h>
 #include <linux/ctype.h>
 #include <linux/string.h>