wifi: ath12k: avoid duplicated vdev down

ath12k_mac_op_unassign_vif_chanctx() will do vdev down in function
ath12k_mac_monitor_stop(). So no need to do vdev down again.

remove the duplicated one.

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Signed-off-by: Kang Yang <quic_kangyang@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20240429081525.983-4-quic_kangyang@quicinc.com

drivers/net/wireless/ath/ath12k/mac.c

@@ -7407,10 +7407,6 @@ ath12k_mac_op_unassign_vif_chanctx(struct ieee80211_hw *hw,
 	}
 	arvif->is_started = false;
 
-	if (ab->hw_params->vdev_start_delay &&
-	    arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
-		ath12k_wmi_vdev_down(ar, arvif->vdev_id);
-
 	if (arvif->vdev_type != WMI_VDEV_TYPE_MONITOR &&
 	    ar->num_started_vdevs == 1 && ar->monitor_vdev_created)
 		ath12k_mac_monitor_stop(ar);