Remove the redundant explicit NAPI deletion from the registered-device
remove path.

The confirmed lifecycle contract is that unregister_netdev() performs
the NAPI teardown. Probe failure cleanup before registration remains
unchanged.

Signed-off-by: jiawen <1298662399@qq.com>
---
diff --git a/drivers/net/ethernet/hisilicon/hisi_femac.c b/drivers/net/ethernet/hisilicon/hisi_femac.c
--- a/drivers/net/ethernet/hisilicon/hisi_femac.c
+++ b/drivers/net/ethernet/hisilicon/hisi_femac.c
@@ -898,7 +898,6 @@
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct hisi_femac_priv *priv = netdev_priv(ndev);
 
-	netif_napi_del(&priv->napi);
 	unregister_netdev(ndev);
 
 	phy_disconnect(ndev->phydev);