[openwrt/openwrt] netfilter.mk: remove now obsolete kmod nf_nat_redirect

[LEDE Commits]

yousong pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/472a06f7076f5dff5eacad4287792c6ed03ba1d8

commit 472a06f7076f5dff5eacad4287792c6ed03ba1d8
Author: Yousong Zhou <yszhou4tech at gmail.com>
AuthorDate: Tue Oct 20 09:41:07 2020 +0800

    netfilter.mk: remove now obsolete kmod nf_nat_redirect
    
    Now that the minimal kernel version maintained here is 4.19
    
    Signed-off-by: Yousong Zhou <yszhou4tech at gmail.com>
---
 include/netfilter.mk | 1 -
 1 file changed, 1 deletion(-)

diff --git a/include/netfilter.mk b/include/netfilter.mk
index 0c29c0bd04..2c71c07056 100644
--- a/include/netfilter.mk
+++ b/include/netfilter.mk
@@ -184,7 +184,6 @@ $(eval $(call nf_add,IPT_IPV6_EXTRA,CONFIG_IP6_NF_MATCH_RT, $(P_V6)ip6t_rt))
 
 # kernel only
 $(eval $(if $(NF_KMOD),$(call nf_add,NF_NAT,CONFIG_NF_NAT, $(P_XT)nf_nat),))
-$(eval $(if $(NF_KMOD),$(call nf_add,NF_NAT,CONFIG_NF_NAT_REDIRECT, $(P_XT)nf_nat_redirect, lt 4.18),))
 $(eval $(if $(NF_KMOD),$(call nf_add,NF_NAT,CONFIG_NF_NAT_IPV4, $(P_V4)nf_nat_ipv4, lt 5.1)))
 $(eval $(if $(NF_KMOD),$(call nf_add,NF_NAT6,CONFIG_NF_NAT_IPV6, $(P_V6)nf_nat_ipv6, lt 5.1)))