[NETFILTER]: ip6_tables: remove broken comefrom debugging
The introduction of x_tables broke comefrom debugging, remove it from
ip6_tables as well (ip_tables already got removed).
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
authored by Patrick McHardy and committed by David S. Miller e4a79ef8 2c16b774