Revert "FROMLIST: scsi: ufs-qcom: Adjust bus bandwidth voting and unvoting"

This reverts commit 99156597.

This is a preparation change for merging android-5.4.5 into
msm-5.4 branch:

Equivalent logic was already submitted into msm-5.4.

Change-Id: Ic80f502d919e686451a79fdcce3da013f12509f0
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>