net/mlx5: Remove outdated comment

The comment is no longer applicable, as the devlink reload and instance
cleanup are both protected with devlink instance lock, therefore no race
can happen.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/dev.c

@@ -377,10 +377,6 @@ int mlx5_attach_device(struct mlx5_core_dev *dev)
 
 			/* Pay attention that this is not PCI driver that
 			 * mlx5_core_dev is connected, but auxiliary driver.
-			 *
-			 * Here we can race of module unload with devlink
-			 * reload, but we don't need to take extra lock because
-			 * we are holding global mlx5_intf_mutex.
 			 */
 			if (!adev->dev.driver)
 				continue;