Revert "wifi: ath11k: Enable threaded NAPI"

This reverts commit 13aa2fb6.

This commit broke QCN9074 initialisation:

[  358.960477] ath11k_pci 0000:04:00.0: ce desc not available for wmi command 36866
[  358.960481] ath11k_pci 0000:04:00.0: failed to send WMI_STA_POWERSAVE_PARAM_CMDID
[  358.960484] ath11k_pci 0000:04:00.0: could not set uapsd params -105

As there's no fix available let's just revert it to get QCN9074 working again.

Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217536


Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230720151444.2016637-1-kvalo@kernel.org