[banshee] Remove AddCallback method

[Aaron Bockover <abock src gnome org>]

commit 23d361cd84dc96b6eb7ae6d46fb0d137f7813032
Author: Aaron Bockover <abockover novell com>
Date:   Tue Jun 29 12:19:11 2010 -0400

    Remove AddCallback method
    
    GConfConfigurationClient should not be used specifically as it is only a
    backend to the Banshee configuration API. If this API adds general
    notification support, then this method could return. It was only added
    for GConfProxy, which is now using GConf.Client directly.

 .../GConfConfigurationClient.cs                    |    9 ---------
 1 files changed, 0 insertions(+), 9 deletions(-)
---
diff --git a/src/Backends/Banshee.Gnome/Banshee.GnomeBackend/GConfConfigurationClient.cs b/src/Backends/Banshee.Gnome/Banshee.GnomeBackend/GConfConfigurationClient.cs
index 844249f..69635b3 100644
--- a/src/Backends/Banshee.Gnome/Banshee.GnomeBackend/GConfConfigurationClient.cs
+++ b/src/Backends/Banshee.Gnome/Banshee.GnomeBackend/GConfConfigurationClient.cs
@@ -77,15 +77,6 @@ namespace Banshee.GnomeBackend
             }
         }
 
-        public void AddCallback (string @namespace, NotifyEventHandler callback)
-        {
-            if (DisableGConf || @namespace == null) {
-                return;
-            }
-
-            client.AddNotify(@namespace, callback);
-        }
-
         private string CreateKey (string @namespace, string part)
         {
             string hash_key = String.Concat (@namespace, part);