staging: wfx: drop unused attribute 'join_complete_status'

The field join_complete_status is never read. Drop it.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200420160311.57323-17-Jerome.Pouiller@silabs.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wfx/sta.c

@@ -361,10 +361,8 @@ static void wfx_do_join(struct wfx_vif *wvif)
 	ret = hif_join(wvif, conf, wvif->channel, ssid, ssidlen);
 	if (ret) {
 		ieee80211_connection_loss(wvif->vif);
-		wvif->join_complete_status = -1;
 		wfx_do_unjoin(wvif);
 	} else {
-		wvif->join_complete_status = 0;
 		/* Due to beacon filtering it is possible that the
 		 * AP's beacon is not known for the mac80211 stack.
 		 * Disable filtering temporary to make sure the stack

drivers/staging/wfx/wfx.h

@@ -82,8 +82,6 @@ struct wfx_vif {
 
 	unsigned long		uapsd_mask;
 
-	int			join_complete_status;
-
 	/* avoid some operations in parallel with scan */
 	struct mutex		scan_lock;
 	struct work_struct	scan_work;