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/plip/plip.c b/drivers/net/plip/plip.c
index a9e9ca8..1a5a316 100644
--- a/drivers/net/plip/plip.c
+++ b/drivers/net/plip/plip.c
@@ -1260,10 +1260,8 @@
 
 		sprintf(name, "plip%d", unit);
 		dev = alloc_etherdev(sizeof(struct net_local));
-		if (!dev) {
-			printk(KERN_ERR "plip: memory squeeze\n");
+		if (!dev)
 			return;
-		}
 
 		strcpy(dev->name, name);