Remove batman option no_rebroadcast

This sysfs option no longer exists.

The no_rebroadcast option was used as part of gluon’s
batman-adv-legacy implementation, after open-mesh decided
to not include it into batman-adv v14:

https://patchwork.open-mesh.org/patch/3434/

Our firmware has included (and enabled) it since December 2013.

With the upgrade to batman-adv v15 (pulled from openwrt-routing
then) in October 2017, the custom patch was no longer included.
It looks like open-mesh provides an equivalent built-in
solution now:

https://git.open-mesh.org/batman-adv.git/commit/a00797d8fa8fd1471e8be1ac23d506f76d866aaa



Thus, the option can be removed.

Signed-off-by: Robert Langhammer <rlanghammer@web.de>
Reviewed-by: Christian Dresel <fff@chrisi01.de>

src/packages/fff/fff-fastd/files/etc/uci-defaults/55_fff-fastd

@@ -22,6 +22,5 @@ EOF
 ln -s /tmp/fastd_fff_peers /etc/fastd/fff/peers
 echo "#!/bin/sh" > /etc/fastd/fff/up.sh
 echo "ip link set up dev fffVPN" >> /etc/fastd/fff/up.sh
-echo "echo enable > /sys/devices/virtual/net/fffVPN/batman_adv/no_rebroadcast" >> /etc/fastd/fff/up.sh
 echo "batctl if add fffVPN" >> /etc/fastd/fff/up.sh
 chmod +x /etc/fastd/fff/up.sh

src/packages/fff/fff-tunneldigger/files/etc/tunneldigger/tunneldigger.hook

@@ -6,5 +6,4 @@ INTERFACE=$2
 if [ "$HOOK" = session.up ]; then
        ip l s dev $INTERFACE up
        batctl if add $INTERFACE
-       echo "enabled" > /sys/devices/virtual/net/$INTERFACE/batman_adv/no_rebroadcast
 fi