package/iptables: drop duplicated dependency

libnetfilter_conntrack dependency is wrongly duplicated since commit
b835171cf9db23095c669b872dbaa15fc1e99898

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
[Peter: drop from "main" _DEPENDENCIES instead]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 857447d2d29912abfc11a79854f1299096d7d34a)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/iptables/iptables.mk

@@ -8,8 +8,7 @@ IPTABLES_VERSION = 1.8.7
 IPTABLES_SOURCE = iptables-$(IPTABLES_VERSION).tar.bz2
 IPTABLES_SITE = https://netfilter.org/projects/iptables/files
 IPTABLES_INSTALL_STAGING = YES
-IPTABLES_DEPENDENCIES = host-pkgconf \
-	$(if $(BR2_PACKAGE_LIBNETFILTER_CONNTRACK),libnetfilter_conntrack)
+IPTABLES_DEPENDENCIES = host-pkgconf
 IPTABLES_LICENSE = GPL-2.0
 IPTABLES_LICENSE_FILES = COPYING
 IPTABLES_CPE_ID_VENDOR = netfilter