lan743x: Remove duplicated include from lan743x_main.c

Remove duplicated include.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/microchip/lan743x_main.c

@@ -15,7 +15,6 @@
 #include <linux/rtnetlink.h>
 #include <linux/iopoll.h>
 #include <linux/crc16.h>
-#include <linux/of_net.h>
 #include "lan743x_main.h"
 #include "lan743x_ethtool.h"