monitoring: T3872: Delete iptables input plugin as we use nft
monitoring: T3872: Delete iptables input plugin as we use nft

Telegraf inputs iptables plugin incompatible with nftables
As it tries to get statistics from "iptables -L -n -v"
which doesnt display required data in 1.4 as we don't use
iptables anymore

vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x