qcacld-3.0: Fix roam scan mode send during RSO update config

As part of RSO update config, roam scan mode is set to 4 before
the WMI_ROAM_SCAN_RSSI_THRESHOLD command is sent to the firmware.
And after WMI_ROAM_SCAN_RSSI_THRESHOLD is sent, the roam scan
mode value is again set back to 7(value 7 enables RSSI scan and
periodic scan). There is a very small window between these two
commands where BMISS event is received and firmware forwards it
to the host which causes a disconnection.

Fix is to disable sending roam scan mode to 4 before sending the
WMI_ROAM_SCAN_RSSI_THRESHOLD command.

Change-Id: I2c22308d711e71e67d132a0bd121aed66497998b
CRs-Fixed: 2508762

core/wma/src/wma_scan_roam.c

@@ -1985,18 +1985,6 @@ QDF_STATUS wma_process_roaming_config(tp_wma_handle wma_handle,
 	case ROAM_SCAN_OFFLOAD_UPDATE_CFG:
 		wma_handle->suitable_ap_hb_failure = false;
 
-		if (roam_req->RoamScanOffloadEnabled) {
-			wma_roam_scan_fill_scan_params(wma_handle, mac,
-						       roam_req, &scan_params);
-			qdf_status =
-				wma_roam_scan_offload_mode(
-					wma_handle, &scan_params, roam_req,
-					WMI_ROAM_SCAN_MODE_NONE,
-					roam_req->sessionId);
-			if (qdf_status != QDF_STATUS_SUCCESS)
-				break;
-		}
-
 		qdf_status = wma_roam_scan_bmiss_cnt(wma_handle,
 					     roam_req->RoamBmissFirstBcnt,
 					     roam_req->RoamBmissFinalBcnt,