babeld is updated to 1.9.2 using a feed patch.
The new version includes fixes a few minor issues.
With babeld 1.9.2 a fix for IPv4 xroutes has been
introduced. Therefore, our own patch isn't necessary anymore,
so it is removed.
Signed-off-by: Fabian Bläse <fabian@blaese.de>
Reviewed-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
