netfilter: remove duplicated include

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

net/ipv6/netfilter/nf_flow_table_ipv6.c

@@ -5,7 +5,6 @@
 #include <linux/rhashtable.h>
 #include <linux/ipv6.h>
 #include <linux/netdevice.h>
-#include <linux/ipv6.h>
 #include <net/ipv6.h>
 #include <net/ip6_route.h>
 #include <net/neighbour.h>

net/netfilter/nf_queue.c

@@ -15,8 +15,6 @@
 #include <linux/netfilter_bridge.h>
 #include <linux/seq_file.h>
 #include <linux/rcupdate.h>
-#include <linux/netfilter_ipv4.h>
-#include <linux/netfilter_ipv6.h>
 #include <net/protocol.h>
 #include <net/netfilter/nf_queue.h>
 #include <net/dst.h>