mt76x2: remove unnecessary MT_TX_ALC_CFG_4 configuration

Remove unnecessary MT_TX_ALC_CFG_4 configuration since the register value
will be properly set according to the usage of an external power amplifier
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@redhat.com>
Acked-by: NFelix Fietkau <nbd@nbd.name>
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/mediatek/mt76/mt76x2_phy.c

@@ -274,7 +274,6 @@ mt76x2_phy_set_txpower_regs(struct mt76x2_dev *dev, enum nl80211_band band)
 			mt76_wr(dev, MT_TX_ALC_CFG_2, 0x1b0f0400);
 			mt76_wr(dev, MT_TX_ALC_CFG_3, 0x1b0f0476);
 		}
-		mt76_wr(dev, MT_TX_ALC_CFG_4, 0);
 
 		if (mt76x2_ext_pa_enabled(dev, band))
 			pa_mode_adj = 0x04000000;