qcacmn: Fix double increment of tx ifconfig stats

In ifconfig athX stats, tx packets and bytes were getting double
incremented in NSS offload disabled case. It was due to tx.comp_pkt
stats getting updated both in per packet Tx completion path and in 
Tx per ppdu indication from HTT path.
Fix by updating stats only in the Tx. completion path.

Change-Id: Id75d914874480a4e24ccb13223818b67869eb378

dp/wifi3.0/monitor/1.0/dp_mon_1.0.c

@@ -1240,9 +1240,6 @@ dp_tx_stats_update(struct dp_pdev *pdev, struct dp_peer *peer,
 	DP_STATS_INC(peer, tx.transmit_type[ppdu->ppdu_type].mpdu_tried,
 		     mpdu_tried);
 
-	DP_STATS_INC_PKT(peer, tx.comp_pkt,
-			 num_msdu, (ppdu->success_bytes +
-				    ppdu->retry_bytes + ppdu->failed_bytes));
 	DP_STATS_UPD(peer, tx.tx_rate, ppdu->tx_rate);
 	DP_STATS_INC(peer, tx.sgi_count[ppdu->gi], num_msdu);
 	DP_STATS_INC(peer, tx.bw[ppdu->bw], num_msdu);