[banshee] PlaylistFormatBase: remove unused using statement

[AndrÃs Aragoneses <aaragoneses src gnome org>]

commit 9935e1f87dc2d1acfc0f2e45b816900f5a106b2a
Author: Andres G. Aragoneses <knocte gmail com>
Date:   Sun Nov 11 23:59:26 2012 +0000

    PlaylistFormatBase: remove unused using statement
    
    Oops, I should have removed this one too in this commit:
    http://git.gnome.org/browse/banshee/commit/?id=4d674be3e6b738737cd7637e0d9d420b6502465a

 .../PlaylistFormatBase.cs                          |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/src/Core/Banshee.Services/Banshee.Playlists.Formats/PlaylistFormatBase.cs b/src/Core/Banshee.Services/Banshee.Playlists.Formats/PlaylistFormatBase.cs
index 8061323..3a5c2c1 100644
--- a/src/Core/Banshee.Services/Banshee.Playlists.Formats/PlaylistFormatBase.cs
+++ b/src/Core/Banshee.Services/Banshee.Playlists.Formats/PlaylistFormatBase.cs
@@ -34,7 +34,6 @@ using Hyena;
 
 using Banshee.Base;
 using Banshee.Sources;
-using Folder = Banshee.IO.Directory;
 
 namespace Banshee.Playlists.Formats
 {