mt76: mt7915: do not set DRR group for stations

This is causing some extreme latency spikes when sending traffic to
multiple stations at the same time. Disable this until the firmware issue
is sorted out
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7915/mcu.c

@@ -2198,32 +2198,6 @@ int mt7915_mcu_add_rate_ctrl(struct mt7915_dev *dev, struct ieee80211_vif *vif,
 				     MCU_EXT_CMD_STA_REC_UPDATE, true);
 }
 
-static int
-mt7915_mcu_add_group(struct mt7915_dev *dev, struct ieee80211_vif *vif,
-		     struct ieee80211_sta *sta)
-{
-#define MT_STA_BSS_GROUP		1
-	struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
-	struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
-	struct {
-		__le32 action;
-		u8 wlan_idx_lo;
-		u8 status;
-		u8 wlan_idx_hi;
-		u8 rsv0[5];
-		__le32 val;
-		u8 rsv1[8];
-	} __packed req = {
-		.action = cpu_to_le32(MT_STA_BSS_GROUP),
-		.wlan_idx_lo = to_wcid_lo(msta->wcid.idx),
-		.wlan_idx_hi = to_wcid_hi(msta->wcid.idx),
-		.val = cpu_to_le32(mvif->idx % 16),
-	};
-
-	return mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD_SET_DRR_CTRL, &req,
-				 sizeof(req), true);
-}
-
 int mt7915_mcu_add_sta_adv(struct mt7915_dev *dev, struct ieee80211_vif *vif,
 			   struct ieee80211_sta *sta, bool enable)
 {
@@ -2233,10 +2207,6 @@ int mt7915_mcu_add_sta_adv(struct mt7915_dev *dev, struct ieee80211_vif *vif,
 		return 0;
 
 	/* must keep the order */
-	ret = mt7915_mcu_add_group(dev, vif, sta);
-	if (ret)
-		return ret;
-
 	ret = mt7915_mcu_add_txbf(dev, vif, sta, enable);
 	if (ret)
 		return ret;