fff-babeld: remove obsolete first_table_number

The IPv4 source routing features was removed from babeld with version
1.10. Therefore, the first_table_number option is not needed anymore and
its existance stops babeld from starting up.

As babeld 1.10 is included with OpenWrt 21.02, which is currently used
for our firmware, this option is removed.

Signed-off-by: Fabian Bläse <fabian@blaese.de>

src/packages/fff/fff-babeld/Makefile

@@ -1,7 +1,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=fff-babeld
-PKG_RELEASE:=7
+PKG_RELEASE:=8
 
 include $(INCLUDE_DIR)/package.mk
 

src/packages/fff/fff-babeld/files/etc/config/babeld

@@ -1,7 +1,6 @@
 config general
 	option export_table '10'
 	option import_table '10'
-	option first_table_number '100'
 	option local_port '33123'
 
 config interface