mac80211: always use mac80211 loss detection

mac80211: always use mac80211 loss detection

ath10k does not report excessive loss in case of broken block-ack
sessions. The loss is communicated to the host-os, but ath10k does not
trigger a low-ack events by itself.

The mac80211 framework for loss detection however detects this
circumstance well in case of ath10k. So use it regardless of ath10k's
own loss detection mechanism.

Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit ed816f6ba8b5e3df609e5fc53f7bcb09bdaa16be)