net: ethernet: slicoss: remove duplicated include from slic.h

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

drivers/net/ethernet/alacritech/slic.h

@@ -8,7 +8,6 @@
 #include <linux/spinlock_types.h>
 #include <linux/dma-mapping.h>
 #include <linux/pci.h>
-#include <linux/netdevice.h>
 #include <linux/list.h>
 #include <linux/u64_stats_sync.h>