Adding delete subnet operation
diff --git a/openstack/networking/v2/ports/requests.go b/openstack/networking/v2/ports/requests.go
index 919e6de..db81d4a 100644
--- a/openstack/networking/v2/ports/requests.go
+++ b/openstack/networking/v2/ports/requests.go
@@ -233,3 +233,11 @@
 
 	return res.Port, nil
 }
+
+func Delete(c *gophercloud.ServiceClient, id string) error {
+	_, err := perigee.Request("DELETE", DeleteURL(c, id), perigee.Options{
+		MoreHeaders: c.Provider.AuthenticatedHeaders(),
+		OkCodes:     []int{204},
+	})
+	return err
+}