fixes uhttpd-config for initial flash

also fixes noded flashed with "sysupgrade -n"

Signed-off-by: Tobias Klaus <tk+ff@meskal.net>
Reviewed-by: Christian Dresel <fff@chrisi01.de>

src/packages/fff/fff-web/files/etc/uci-defaults/93-fff-uhttpd

@@ -1,6 +1,7 @@
 #!/bin/sh
 
 uci batch <<EOF
+  delete uhttpd.main
   delete uhttpd.public
   delete uhttpd.ssl
   delete uhttpd.px5g
@@ -30,5 +31,5 @@ uci batch <<EOF
   set uhttpd.px5g.commonname='OpenWrt'
 EOF
 
-uci commit
+uci commit uhttpd
 exit 0