S30wifi: we need compat with old program

buildroot/board/cvitek/SG200X/overlay/etc/init.d/S30wifi

@@ -44,8 +44,6 @@ start() {
 		then
 			cp /boot/wpa_supplicant.conf /etc/wpa_supplicant.conf
 		else
-			if [ ! -e /etc/wpa_supplicant.conf ]
-			then
 			ssid=""
 			pass=""
 			if [ -e /boot/wifi.ssid ]
@@ -66,7 +64,6 @@ start() {
 				wpa_passphrase "$ssid" "$pass" >> /etc/wpa_supplicant.conf
 			fi
 		fi
-		fi
 		wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf
 		if [ ! -e /boot/wifi.nodhcp ]
 		then