The modepage argument is unused. Remove it.

Link: https://lore.kernel.org/r/20210929091744.706003-3-damien.lemoal@wdc.comReviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>