nftables: remove dependency on kmod-nf-nat

For minimal firewall setups, NAT support may be unnecessary.

It would be possible to further reduce the minimum number of installed
modules, e.g. by separating IPv4 and IPv6 support or moving conntrack
support into a separate kmod package. We go with a more complete
kmod-nft-core for now, until a concrete usecase for smaller packages
arises.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>

package/network/utils/nftables/Makefile

@@ -31,7 +31,7 @@ define Package/nftables
   CATEGORY:=Network
   SUBMENU:=Firewall
   TITLE:=nftables packet filtering userspace utility
-  DEPENDS:=+kmod-nft-core +kmod-nft-nat +libnftnl
+  DEPENDS:=+kmod-nft-core +libnftnl
   URL:=http://netfilter.org/projects/nftables/
 endef