net: remove duplicate includes

These duplicate includes have been found with scripts/checkincludes.pl but
they have been removed manually to avoid removing false positives.
Signed-off-by: NPravin Shedge <pravin.shedge4linux@gmail.com>
Acked-by: NPablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/core/netprio_cgroup.c

@@ -14,7 +14,6 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/types.h>
-#include <linux/module.h>
 #include <linux/string.h>
 #include <linux/errno.h>
 #include <linux/skbuff.h>

net/dsa/slave.c

@@ -16,7 +16,6 @@
 #include <linux/of_net.h>
 #include <linux/of_mdio.h>
 #include <linux/mdio.h>
-#include <linux/list.h>
 #include <net/rtnetlink.h>
 #include <net/pkt_cls.h>
 #include <net/tc_act/tc_mirred.h>

net/netfilter/nf_conntrack_netlink.c

@@ -45,7 +45,6 @@
 #include <net/netfilter/nf_conntrack_zones.h>
 #include <net/netfilter/nf_conntrack_timestamp.h>
 #include <net/netfilter/nf_conntrack_labels.h>
-#include <net/netfilter/nf_conntrack_seqadj.h>
 #include <net/netfilter/nf_conntrack_synproxy.h>
 #ifdef CONFIG_NF_NAT_NEEDED
 #include <net/netfilter/nf_nat_core.h>

net/sched/act_meta_mark.c

@@ -22,7 +22,6 @@
 #include <net/pkt_sched.h>
 #include <uapi/linux/tc_act/tc_ife.h>
 #include <net/tc_act/tc_ife.h>
-#include <linux/rtnetlink.h>
 
 static int skbmark_encode(struct sk_buff *skb, void *skbdata,
 			  struct tcf_meta_info *e)

net/sched/act_meta_skbtcindex.c

@@ -22,7 +22,6 @@
 #include <net/pkt_sched.h>
 #include <uapi/linux/tc_act/tc_ife.h>
 #include <net/tc_act/tc_ife.h>
-#include <linux/rtnetlink.h>
 
 static int skbtcindex_encode(struct sk_buff *skb, void *skbdata,
 			     struct tcf_meta_info *e)

net/sched/cls_api.c

@@ -23,7 +23,6 @@
 #include <linux/skbuff.h>
 #include <linux/init.h>
 #include <linux/kmod.h>
-#include <linux/err.h>
 #include <linux/slab.h>
 #include <net/net_namespace.h>
 #include <net/sock.h>

net/sched/cls_u32.c

@@ -45,7 +45,6 @@
 #include <net/netlink.h>
 #include <net/act_api.h>
 #include <net/pkt_cls.h>
-#include <linux/netdevice.h>
 #include <linux/idr.h>
 
 struct tc_u_knode {