drivers/net: Remove alloc_etherdev error messages

alloc_etherdev has a generic OOM/unable to alloc message.
Remove the duplicative messages after alloc_etherdev calls.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/alteon/acenic.c b/drivers/net/ethernet/alteon/acenic.c
index f872748..6c3b1c0 100644
--- a/drivers/net/ethernet/alteon/acenic.c
+++ b/drivers/net/ethernet/alteon/acenic.c
@@ -463,11 +463,8 @@
 	static int boards_found;
 
 	dev = alloc_etherdev(sizeof(struct ace_private));
-	if (dev == NULL) {
-		printk(KERN_ERR "acenic: Unable to allocate "
-		       "net_device structure!\n");
+	if (dev == NULL)
 		return -ENOMEM;
-	}
 
 	SET_NETDEV_DEV(dev, &pdev->dev);