mac80211: remove ath10k_pci memory hacks

mac80211: remove ath10k_pci memory hacks

These two hacks are no longer necessary as they've
been moved to a special variant of kmod-ath10k-ct.

So, if you have a device suffering from low-memory
situation and getting applications crashes due to
the OOM reaper or kernel panics with ath10k, please
use the "kmod-ath10k-ct-smallbuffers" package from
now on.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>