scsi: ufs: core: Remove wlun_dev_to_hba()

Commit edc0596c ("scsi: ufs: core: Stop clearing UNIT ATTENTIONS")
removed all callers of wlun_dev_to_hba(). Hence also remove the macro
itself.

Link: https://lore.kernel.org/r/1891546521.01644927481711.JavaMail.epsvc@epcpadp4


Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Keoseong Park <keosung.park@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>