arcnet: capmode: remove redundant assignment to pointer pkt

Pointer pkt is being initialized with a value that is never read
and pkt is being re-assigned a little later on. The assignment is
redundant and hence can be removed.

Addresses-Coverity: ("Ununsed value")
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/arcnet/capmode.c

@@ -44,7 +44,7 @@ static void rx(struct net_device *dev, int bufnum,
 {
 	struct arcnet_local *lp = netdev_priv(dev);
 	struct sk_buff *skb;
-	struct archdr *pkt = pkthdr;
+	struct archdr *pkt;
 	char *pktbuf, *pkthdrbuf;
 	int ofs;