mt76: mt7915: Remove unneeded semicolon

fix semicolon.cocci warnings:
drivers/net/wireless/mediatek/mt76/mt7915/mac.c:1694:2-3: Unneeded semicolon
Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

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

@@ -1733,7 +1733,7 @@ void mt7915_mac_work(struct work_struct *work)
 	if (++phy->sta_work_count == 10) {
 		phy->sta_work_count = 0;
 		mt7915_mac_sta_stats_work(phy);
-	};
+	}
 
 	mutex_unlock(&mphy->dev->mutex);