Remove unnecessary include of linux/version.h.

Link: https://lore.kernel.org/r/1617283618-19346-1-git-send-email-tiantao6@hisilicon.comSigned-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Zhiqi Song <songzhiqi1@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>