scsi: ufs: Remove the check before call setup clock notify vops

The functionality of vendor specific ops should be handled properly in
platform specific driver, but should not count on the UFS driver.

Link: https://lore.kernel.org/r/1581392451-28743-5-git-send-email-cang@codeaurora.org


Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>