[gnome-boxes] unattended-installer: Drop redundant field

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit a193c381e05d9e3cce3aa91e0bc5a73d19757137
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Wed Aug 12 18:20:18 2015 +0100

    unattended-installer: Drop redundant field
    
    Drop the redundant product_key_format field.

 src/unattended-installer.vala |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)
---
diff --git a/src/unattended-installer.vala b/src/unattended-installer.vala
index f0409b1..ddf5072 100644
--- a/src/unattended-installer.vala
+++ b/src/unattended-installer.vala
@@ -36,8 +36,6 @@ private class Boxes.UnattendedInstaller: InstallerMedia {
     public InstallConfig config;
     public InstallScriptList scripts;
 
-    private string? product_key_format;
-
     private GLib.List<UnattendedFile> unattended_files;
     private GLib.List<UnattendedFile> secondary_unattended_files;
     private UnattendedAvatarFile avatar_file;
@@ -111,8 +109,8 @@ private class Boxes.UnattendedInstaller: InstallerMedia {
         timezone = get_timezone ();
         lang = get_preferred_language ();
         kbd = lang;
-        product_key_format = get_product_key_format ();
 
+        var product_key_format = get_product_key_format ();
         setup_box = new UnattendedSetupBox (this, product_key_format, needs_internet);
         setup_box.notify["ready-to-create"].connect (() => {
             notify_property ("ready-to-create");