Revert "cnss2: Add support to monitor PM QOS votes"

This reverts commit faf83ec6.
Reverting the change brings back default behavior of runtime PM.
It removes the dependency of runtime PM with PM QOS votes.

Change-Id: I508192685b8a84aabc5314cb454b498f3c1edfd8
CRs-Fixed: 2587676
Signed-off-by: Mahesh Kumar Kalikot Veetil <mkalikot@codeaurora.org>