mt76: only schedule txqs from the tx tasklet

Reduces lock contention from the tx path and improves performance

Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/dma.c

@@ -205,8 +205,6 @@ mt76_dma_tx_cleanup(struct mt76_dev *dev, enum mt76_txq_id qid, bool flush)
 
 	spin_unlock_bh(&q->lock);
 
-	if (!flush)
-		mt76_txq_schedule(dev, qid);
 	if (wake)
 		ieee80211_wake_queue(dev->hw, qid);
 }