scsi: ufs: core: Remove unused function declaration

Commit 2468da6 ("scsi: ufs: core: mcq: Configure operation and runtime
interface") added ufshcd_mcq_select_mcq_mode(), but it's not used
anywhere. So remove it.

Signed-off-by: Keoseong Park <keosung.park@samsung.com>
Link: https://lore.kernel.org/r/20230627012931epcms2p76f458e0b2ce8a591b56bbcc6a2f1a3bb@epcms2p7
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Author: keosung

drivers/ufs/core/ufshcd-priv.h

@@ -68,7 +68,6 @@ int ufshcd_mcq_decide_queue_depth(struct ufs_hba *hba);
 int ufshcd_mcq_memory_alloc(struct ufs_hba *hba);
 void ufshcd_mcq_make_queues_operational(struct ufs_hba *hba);
 void ufshcd_mcq_config_mac(struct ufs_hba *hba, u32 max_active_cmds);
-void ufshcd_mcq_select_mcq_mode(struct ufs_hba *hba);
 u32 ufshcd_mcq_read_cqis(struct ufs_hba *hba, int i);
 void ufshcd_mcq_write_cqis(struct ufs_hba *hba, u32 val, int i);
 struct ufs_hw_queue *ufshcd_mcq_req_to_hwq(struct ufs_hba *hba,