Remove #include <linux/version.h>. Don't need it.

Link: https://lore.kernel.org/r/20191122020911.33269-1-yuehaibing@huawei.comSigned-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>