net: Fix warning fallout from recent NAPI interface changes.

When we removed the network device argument from several
NAPI interfaces in 908a7a16b8
("net: Remove unused netdev arg from some NAPI interfaces.")
several drivers now started getting unused variable warnings.

This fixes those up.

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/qla3xxx.c

@@ -2284,7 +2284,6 @@ static int ql_tx_rx_clean(struct ql3_adapter *qdev,
 static int ql_poll(struct napi_struct *napi, int budget)
 {
 	struct ql3_adapter *qdev = container_of(napi, struct ql3_adapter, napi);
-	struct net_device *ndev = qdev->ndev;
 	int rx_cleaned = 0, tx_cleaned = 0;
 	unsigned long hw_flags;
 	struct ql3xxx_port_registers __iomem *port_regs = qdev->mem_map_registers;