scsi: libsas: Delete lldd_clear_aca callback

scsi: libsas: Delete lldd_clear_aca callback

[ Upstream commit 25882c82f850e3e972a973e0af310b3e58de38fd ]

This callback is never called, so remove support.

Link: https://lore.kernel.org/r/1645112566-115804-4-git-send-email-john.garry@huawei.com
Tested-by: Yihang Li <liyihang6@hisilicon.com>
Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Jack Wang <jinpu.wang@ionos.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Stable-dep-of: 8aa580cd9284 ("scsi: hisi_sas: Enable force phy when SATA disk directly connected")
Signed-off-by: Sasha Levin <sashal@kernel.org>