staging: rtl8188eu: remove rtw_wx_set_rate handler function

Remove rtw_wx_set_rate handler function, which currently handles the
SIOCSIWRATE wext ioctl. This function (although containing a lot of
code) set nothing outside its own local variables, and did nothing other
than call a now removed debugging statement repeatedly. Removing it and
leaving its associated entry in rtw_handlers as NULL is therefore the
better option. Removing this function also fixes a kernel test robot
warning.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210625191658.1299-1-phil@philpotter.co.ukSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/os_dep/ioctl_linux.c

@@ -1262,80 +1262,6 @@ static int rtw_wx_get_essid(struct net_device *dev,
 	return 0;
 }
 
-static int rtw_wx_set_rate(struct net_device *dev,
-			   struct iw_request_info *a,
-			   union iwreq_data *wrqu, char *extra)
-{
-	int i;
-	u8 datarates[NumRates];
-	u32	target_rate = wrqu->bitrate.value;
-	u32	fixed = wrqu->bitrate.fixed;
-	u32	ratevalue = 0;
-	u8 mpdatarate[NumRates] = {11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0xff};
-
-	if (target_rate == -1) {
-		ratevalue = 11;
-		goto set_rate;
-	}
-	target_rate /= 100000;
-
-	switch (target_rate) {
-	case 10:
-		ratevalue = 0;
-		break;
-	case 20:
-		ratevalue = 1;
-		break;
-	case 55:
-		ratevalue = 2;
-		break;
-	case 60:
-		ratevalue = 3;
-		break;
-	case 90:
-		ratevalue = 4;
-		break;
-	case 110:
-		ratevalue = 5;
-		break;
-	case 120:
-		ratevalue = 6;
-		break;
-	case 180:
-		ratevalue = 7;
-		break;
-	case 240:
-		ratevalue = 8;
-		break;
-	case 360:
-		ratevalue = 9;
-		break;
-	case 480:
-		ratevalue = 10;
-		break;
-	case 540:
-		ratevalue = 11;
-		break;
-	default:
-		ratevalue = 11;
-		break;
-	}
-
-set_rate:
-
-	for (i = 0; i < NumRates; i++) {
-		if (ratevalue == mpdatarate[i]) {
-			datarates[i] = mpdatarate[i];
-			if (fixed == 0)
-				break;
-		} else {
-			datarates[i] = 0xff;
-		}
-	}
-
-	return 0;
-}
-
 static int rtw_wx_get_rate(struct net_device *dev,
 			   struct iw_request_info *info,
 			   union iwreq_data *wrqu, char *extra)
@@ -2715,7 +2641,6 @@ static iw_handler rtw_handlers[] = {
 	IW_HANDLER(SIOCSIWESSID, rtw_wx_set_essid),
 	IW_HANDLER(SIOCGIWESSID, rtw_wx_get_essid),
 	IW_HANDLER(SIOCGIWNICKN, rtw_wx_get_nick),
-	IW_HANDLER(SIOCSIWRATE, rtw_wx_set_rate),
 	IW_HANDLER(SIOCGIWRATE, rtw_wx_get_rate),
 	IW_HANDLER(SIOCSIWRTS, rtw_wx_set_rts),
 	IW_HANDLER(SIOCGIWRTS, rtw_wx_get_rts),