[tomboy] Allow empty username field

[Sanford Armstrong <sharm src gnome org>]

commit 5a59dd53f9f942b720dc110990559135c1fffc68
Author: Greg Poirier <grep binary-snobbery com>
Date:   Sun Jan 10 11:39:35 2010 -0600

    Allow empty username field
    
    Neither SSH nor sshfs require a username to connect to a remote host.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=606572

 .../Addins/SshSyncService/SshSyncServiceAddin.cs   |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/Tomboy/Addins/SshSyncService/SshSyncServiceAddin.cs b/Tomboy/Addins/SshSyncService/SshSyncServiceAddin.cs
index f3dba84..4cde08b 100644
--- a/Tomboy/Addins/SshSyncService/SshSyncServiceAddin.cs
+++ b/Tomboy/Addins/SshSyncService/SshSyncServiceAddin.cs
@@ -218,8 +218,7 @@ namespace Tomboy.Sync
 			folder = folderEntry.Text.Trim ();
 			username = usernameEntry.Text.Trim ();
 
-			return !string.IsNullOrEmpty (server)
-			       && !string.IsNullOrEmpty (username);
+			return !string.IsNullOrEmpty (server);
 		}
 
 		// TODO: Centralize duplicated code