[easytag] Fix unused variable warning in CDDB dialog

[David King <davidk src gnome org>]

commit aeda2dfb6a2cad51fca83bbf6d4e51f8a764100c
Author: David King <amigadave amigadave com>
Date:   Thu Jul 9 09:32:48 2015 +0100

    Fix unused variable warning in CDDB dialog
    
    https://mail.gnome.org/archives/easytag-list/2015-July/msg00000.html

 src/cddb_dialog.c |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)
---
diff --git a/src/cddb_dialog.c b/src/cddb_dialog.c
index 1dae0b5..26ce915 100644
--- a/src/cddb_dialog.c
+++ b/src/cddb_dialog.c
@@ -2736,10 +2736,6 @@ et_cddb_dialog_on_response (EtCDDBDialog *self,
                             gint response_id,
                             gpointer user_data)
 {
-    EtCDDBDialogPrivate *priv;
-
-    priv = et_cddb_dialog_get_instance_private (self);
-
     switch (response_id)
     {
         case GTK_RESPONSE_CLOSE: