igbvf: remove unused spinlock

tx_queue_lock and stats_lock are declared and initialized, but never
used. Remove them.

Signed-off-by: Wander Lairson Costa <wander@redhat.com>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Author: walac

drivers/net/ethernet/intel/igbvf/igbvf.h

@@ -169,8 +169,6 @@ struct igbvf_adapter {
 	u16 link_speed;
 	u16 link_duplex;
 
-	spinlock_t tx_queue_lock; /* prevent concurrent tail updates */
-
 	/* track device up/down/testing state */
 	unsigned long state;
 
@@ -220,7 +218,6 @@ struct igbvf_adapter {
 	/* OS defined structs */
 	struct net_device *netdev;
 	struct pci_dev *pdev;
-	spinlock_t stats_lock; /* prevent concurrent stats updates */
 
 	/* structs defined in e1000_hw.h */
 	struct e1000_hw hw;

drivers/net/ethernet/intel/igbvf/netdev.c

@@ -1656,12 +1656,9 @@ static int igbvf_sw_init(struct igbvf_adapter *adapter)
 	if (igbvf_alloc_queues(adapter))
 		return -ENOMEM;
 
-	spin_lock_init(&adapter->tx_queue_lock);
-
 	/* Explicitly disable IRQ since the NIC can be in any state. */
 	igbvf_irq_disable(adapter);
 
-	spin_lock_init(&adapter->stats_lock);
 	spin_lock_init(&adapter->hw.mbx_lock);
 
 	set_bit(__IGBVF_DOWN, &adapter->state);