scsi: ufs: exynos: Remove empty drv_init method

Remove empty method. When the method is not set, the call is not made,
saving a few cycles.

Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Link: https://lore.kernel.org/r/20241031150033.3440894-2-peter.griffin@linaro.org


Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>