wifi: mt76: mt7921: drop ieee80211_[start, stop]_queues in driver

The firmware would be in charge of braking and continuing the traffic while
the channel contexts are switching between different BSS and HW SCAN in the
background.
Signed-off-by: NSean Wang <sean.wang@mediatek.com>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7921/mcu.c

@@ -199,20 +199,6 @@ mt7921_mcu_connection_loss_event(struct mt7921_dev *dev, struct sk_buff *skb)
 					mt7921_mcu_connection_loss_iter, event);
 }
 
-static void
-mt7921_mcu_bss_event(struct mt7921_dev *dev, struct sk_buff *skb)
-{
-	struct mt76_phy *mphy = &dev->mt76.phy;
-	struct mt76_connac_mcu_bss_event *event;
-
-	skb_pull(skb, sizeof(struct mt76_connac2_mcu_rxd));
-	event = (struct mt76_connac_mcu_bss_event *)skb->data;
-	if (event->is_absent)
-		ieee80211_stop_queues(mphy->hw);
-	else
-		ieee80211_wake_queues(mphy->hw);
-}
-
 static void
 mt7921_mcu_debug_msg_event(struct mt7921_dev *dev, struct sk_buff *skb)
 {
@@ -279,9 +265,6 @@ mt7921_mcu_rx_unsolicited_event(struct mt7921_dev *dev, struct sk_buff *skb)
 	case MCU_EVENT_SCAN_DONE:
 		mt7921_mcu_scan_event(dev, skb);
 		return;
-	case MCU_EVENT_BSS_ABSENCE:
-		mt7921_mcu_bss_event(dev, skb);
-		break;
 	case MCU_EVENT_DBG_MSG:
 		mt7921_mcu_debug_msg_event(dev, skb);
 		break;
@@ -341,7 +324,6 @@ void mt7921_mcu_rx_event(struct mt7921_dev *dev, struct sk_buff *skb)
 	if (rxd->ext_eid == MCU_EXT_EVENT_RATE_REPORT ||
 	    rxd->eid == MCU_EVENT_BSS_BEACON_LOSS ||
 	    rxd->eid == MCU_EVENT_SCHED_SCAN_DONE ||
-	    rxd->eid == MCU_EVENT_BSS_ABSENCE ||
 	    rxd->eid == MCU_EVENT_SCAN_DONE ||
 	    rxd->eid == MCU_EVENT_TX_DONE ||
 	    rxd->eid == MCU_EVENT_DBG_MSG ||