[rygel] core: Remove unused errordomain

[Jens Georg <jensgeorg src gnome org>]

commit eb6fdd168678766c8f5e5616ee853434a719e2ae
Author: Jens Georg <mail jensge org>
Date:   Mon Apr 29 16:37:20 2019 +0200

    core: Remove unused errordomain

 src/librygel-core/rygel-root-device-factory.vala | 4 ----
 1 file changed, 4 deletions(-)
---
diff --git a/src/librygel-core/rygel-root-device-factory.vala 
b/src/librygel-core/rygel-root-device-factory.vala
index 3f9a6a75..329ff95c 100644
--- a/src/librygel-core/rygel-root-device-factory.vala
+++ b/src/librygel-core/rygel-root-device-factory.vala
@@ -28,10 +28,6 @@
 
 using GUPnP;
 
-public errordomain RootDeviceFactoryError {
-    XML_PARSE,
-}
-
 namespace Rygel {
     private static string pretty_host_name = null;