librem5-devkit-base delivers a modprobe file now so we don't need to create it here

Signed-off-by: Angus Ainslie <angus@akkea.ca>

root.sh

@@ -213,11 +213,6 @@ EOF
 
 function setup_network()
 {
-	cat << EOF > "${basedir}/etc/modprobe.d/rsi_91x.conf"
-# This is for wlan sta + BT
-options dev_oper_mode=13 rsi_zone_enabled=1
-EOF
-
     cat << EOF > "${basedir}/etc/hosts"
 127.0.0.1       pureos   localhost
 ::1             localhost ip6-localhost ip6-loopback