iptables: iptables-mod-conntrack-extra: don't select kmod-ipt-raw

iptables: iptables-mod-conntrack-extra: don't select kmod-ipt-raw

Package kmod-ipt-raw enables CONFIG_IP_NF_RAW and packages
iptable_raw.ko

According to kernel's net/netfilter/Kconfig there are only 3 kernel
symbols that depend on the IP_NF_RAW:
1. NETFILTER_XT_TARGET_CT (xt_CT.ko)
2. NETFILTER_XT_TARGET_NOTRACK (unused symbol?!)
3. NETFILTER_XT_TARGET_TRACE (xt_TRACE.ko)

Now: iptables-mod-conntrack-extra selects kmod-ipt-conntrack-extra which
provides: xt_helper.ko nf_conncount.ko xt_connlimit.ko xt_connmark.ko
xt_recent.ko and xt_connbytes.ko (none of them seems to require
iptable_raw.ko).

It seems there is no explicit reason for iptables-mod-conntrack-extra to
require kmod-ipt-raw (iptables_raw.ko).

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>