net: usb: lan78xx: remove unused including <linux/version.h>

Remove including <linux/version.h> that don't need it.
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NZheng Yongjun <zhengyongjun3@huawei.com>
Acked-by: NWoojung Huh <Woojung.Huh@microchip.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/usb/lan78xx.c

@@ -2,7 +2,6 @@
 /*
  * Copyright (C) 2015 Microchip Technology
  */
-#include <linux/version.h>
 #include <linux/module.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>