[gnome-control-center] background: Remove unused variable

[Debarshi Ray <debarshir src gnome org>]

commit 516e2a624fca8f698af26683e96190e1bafd5556
Author: Debarshi Ray <debarshir gnome org>
Date:   Thu Oct 3 13:58:03 2013 +0200

    background: Remove unused variable
    
    Fallout from 79ec684fa4912a1e5bff17ce11b036cef4a298aa
    
    https://bugzilla.gnome.org/show_bug.cgi?id=708943

 panels/background/cc-background-chooser-dialog.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/panels/background/cc-background-chooser-dialog.c 
b/panels/background/cc-background-chooser-dialog.c
index 1568265..61d19d4 100644
--- a/panels/background/cc-background-chooser-dialog.c
+++ b/panels/background/cc-background-chooser-dialog.c
@@ -67,7 +67,6 @@ struct _CcBackgroundChooserDialogPrivate
 #endif
 
   GnomeDesktopThumbnailFactory *thumb_factory;
-  gint current_source;
 
   GCancellable *copy_cancellable;