scsi: ufs: ufs-mediatek: Delete some dead code

scsi: ufs: ufs-mediatek: Delete some dead code

There is already a test for "if (val == state)" earlier so it's not
possible here.  Delete the dead code.

Fixes: 9006e3986f66 ("scsi: ufs-mediatek: Do not gate clocks if auto-hibern8 is not entered yet")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/68fce64f-4970-45f1-807e-6c0eecdfcdc2@kili.mountain
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>