regex/mlx5: fix redundancy in device removal

[ upstream commit 34c84eb ]

In the removal function, PMD releases all driver resources and
cancels the regexdev registry.

However, regexdev registration is accidentally canceled twice.
Remove one of them.

Fixes: b34d816 ("regex/mlx5: support rules import")

Signed-off-by: Michael Baum <michaelba@nvidia.com>
Acked-by: Ori Kam <orika@nvidia.com>

drivers/regex/mlx5/mlx5_regex.c

@@ -248,8 +248,6 @@ mlx5_regex_pci_remove(struct rte_pci_device *pci_dev)
 			rte_regexdev_unregister(priv->regexdev);
 		if (priv->ctx)
 			mlx5_glue->close_device(priv->ctx);
-		if (priv->regexdev)
-			rte_regexdev_unregister(priv->regexdev);
 		rte_free(priv);
 	}
 	return 0;