qcacmn: Remove wmi_unified_get_buf_extscan_hotlist_cmd()

Change "qcacmn: Add revised extscan start hotlist monitor API" (Change
Id Ie705f2462c7d5befa691f1ab57293e55ab68e3e2) recently added a revised
"start hotlist" handler. The only known client of the existing
interface was converted to use the new interface with change
"qcacld-3.0: Refine the extscan start BSSID hotlist logic" (Change-Id
I4d9f982177bc61a751ba0e7437fe55482dfd2723) so remove the now obsolete
interface.

Change-Id: I6e43170daa3ed2d932f1f2fa6717ea230a37ea8b
CRs-Fixed: 2294278

wmi_unified_extscan_api.h

@@ -62,8 +62,4 @@ QDF_STATUS wmi_unified_stop_extscan_cmd(void *wmi_hdl,
 QDF_STATUS wmi_unified_start_extscan_cmd(void *wmi_hdl,
 			  struct wifi_scan_cmd_req_params *pstart);
 
-QDF_STATUS wmi_unified_get_buf_extscan_hotlist_cmd(void *wmi_hdl,
-				   struct ext_scan_setbssid_hotlist_params *
-				   photlist, int *buf_len);
-
 #endif /* _WMI_UNIFIED_EXTSCAN_API_H_ */

wmi_unified_param.h

@@ -3586,8 +3586,6 @@ struct extscan_bssid_hotlist_set_params {
 	uint32_t  num_ap;
 	struct ap_threshold_params ap[WMI_WLAN_EXTSCAN_MAX_HOTLIST_APS];
 };
-/* legacy naming */
-#define ext_scan_setbssid_hotlist_params extscan_bssid_hotlist_set_params
 
 /**
  * struct host_mem_req - Host memory request paramseters request by target

wmi_unified_priv.h

@@ -809,10 +809,6 @@ QDF_STATUS (*send_set_arp_stats_req_cmd)(wmi_unified_t wmi_handle,
 QDF_STATUS (*send_get_arp_stats_req_cmd)(wmi_unified_t wmi_handle,
 					 struct get_arp_stats *req_buf);
 
-QDF_STATUS (*send_get_buf_extscan_hotlist_cmd)(wmi_unified_t wmi_handle,
-				   struct ext_scan_setbssid_hotlist_params *
-				   photlist, int *buf_len);
-
 #ifdef FEATURE_WLAN_APF
 QDF_STATUS
 (*send_set_active_apf_mode_cmd)(wmi_unified_t wmi_handle, uint8_t vdev_id,