ixgbe: remove duplicate netif_tx_start_all_queues

netif_tx_start_all_queues() is already called in ixgbe_up_complete, no need
to do it twice.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

@@ -5206,8 +5206,6 @@ static int ixgbe_open(struct net_device *netdev)
 
 	ixgbe_up_complete(adapter);
 
-	netif_tx_start_all_queues(netdev);
-
 	return 0;
 
 err_req_irq: