staging: rtl8723bs: remove obsolete wext support

cfg80211 has been fully implemented so
remove all wext and wext private handlers and their
registration.

Now wext userspace calls can be managed via
cfg80211 wext compatibility.
Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/61c4bb20bbb6ce30e4ddd01aa73de3f686a99445.1629727333.git.fabioaiuto83@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/Kconfig

@@ -3,8 +3,7 @@ config RTL8723BS
 	tristate "Realtek RTL8723BS SDIO Wireless LAN NIC driver"
 	depends on WLAN && MMC && CFG80211
 	depends on m
-	select WIRELESS_EXT
-	select WEXT_PRIV
+	select CFG80211_WEXT
 	select CRYPTO_LIB_ARC4
 	help
 	This option enables support for RTL8723BS SDIO drivers, such as

drivers/staging/rtl8723bs/os_dep/os_intfs.c

@@ -474,7 +474,6 @@ struct net_device *rtw_init_netdev(struct adapter *old_padapter)
 
 	/* pnetdev->tx_timeout = NULL; */
 	pnetdev->watchdog_timeo = HZ * 3; /* 3 second timeout */
-	pnetdev->wireless_handlers = (struct iw_handler_def *)&rtw_handlers_def;
 
 	/* step 2. */
 	loadparam(padapter, pnetdev);