The variable page is not used in the function, so delete it.

Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=2348Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/20221009060249.40178-1-jiapeng.chong@linux.alibaba.comSigned-off-by: Martin K. Petersen <martin.petersen@oracle.com>