[gnome-boxes] installer: Remove redundant error domain

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit fc68530bf9b921539a6d804f8106bbd85d0109e2
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Wed Dec 19 17:22:48 2012 +0200

    installer: Remove redundant error domain
    
    This has been redundant since 2b22dfe but compiler didn't warn about it
    since it was declared 'public'.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=690536

 src/unattended-installer.vala |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)
---
diff --git a/src/unattended-installer.vala b/src/unattended-installer.vala
index e0b0126..33c2f57 100644
--- a/src/unattended-installer.vala
+++ b/src/unattended-installer.vala
@@ -3,10 +3,6 @@
 using GVirConfig;
 using Osinfo;
 
-public errordomain UnattendedInstallerError {
-    SETUP_INCOMPLETE
-}
-
 private class Boxes.UnattendedInstaller: InstallerMedia {
     public override bool need_user_input_for_vm_creation {
         get {