staging: rtl8192e: Remove function _rtl92e_wx_adapter_power_status()

Remove function _rtl92e_wx_adapter_power_status() as this functionality
is not commonly used and the tool to access it is deprecated.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/2fc8f18019c760125ae7c52c765271d2877c52bd.1696548527.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtl8192e/rtl_wx.c

@@ -122,34 +122,6 @@ static int _rtl92e_wx_get_power(struct net_device *dev,
 	return rtllib_wx_get_power(priv->rtllib, info, wrqu, extra);
 }
 
-static int _rtl92e_wx_adapter_power_status(struct net_device *dev,
-					   struct iw_request_info *info,
-					   union iwreq_data *wrqu, char *extra)
-{
-	struct r8192_priv *priv = rtllib_priv(dev);
-	struct rt_pwr_save_ctrl *psc = (struct rt_pwr_save_ctrl *)
-					(&priv->rtllib->pwr_save_ctrl);
-	struct rtllib_device *ieee = priv->rtllib;
-
-	mutex_lock(&priv->wx_mutex);
-
-	if (*extra) {
-		priv->ps_force = false;
-		psc->bLeisurePs = true;
-	} else {
-		if (priv->rtllib->link_state == MAC80211_LINKED)
-			rtl92e_leisure_ps_leave(dev);
-
-		priv->ps_force = true;
-		psc->bLeisurePs = false;
-		ieee->ps = *extra;
-	}
-
-	mutex_unlock(&priv->wx_mutex);
-
-	return 0;
-}
-
 static int _rtl92e_wx_set_debug(struct net_device *dev,
 				struct iw_request_info *info,
 				union iwreq_data *wrqu, char *extra)
@@ -927,10 +899,6 @@ static const struct iw_priv_args r8192_private_args[] = {
 	}, {
 		SIOCIWFIRSTPRIV + 0x1,
 		IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "activescan"
-	}, {
-		SIOCIWFIRSTPRIV + 0x6,
-		IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, IW_PRIV_TYPE_NONE,
-		"set_power"
 	}
 
 };
@@ -938,11 +906,6 @@ static const struct iw_priv_args r8192_private_args[] = {
 static iw_handler r8192_private_handler[] = {
 	(iw_handler)_rtl92e_wx_set_debug,   /*SIOCIWSECONDPRIV*/
 	(iw_handler)_rtl92e_wx_set_scan_type,
-	(iw_handler)NULL,
-	(iw_handler)NULL,
-	(iw_handler)NULL,
-	(iw_handler)NULL,
-	(iw_handler)_rtl92e_wx_adapter_power_status,
 };
 
 static struct iw_statistics *_rtl92e_get_wireless_stats(struct net_device *dev)