[gnome-shell] unlockDialog: drop unused variable

[Ray Strode <halfline src gnome org>]

commit 09d34a2129ced6b07592e7508bf521cc45b365e2
Author: Ray Strode <rstrode redhat com>
Date:   Wed Jul 17 11:58:05 2013 -0400

    unlockDialog: drop unused variable
    
    https://bugzilla.gnome.org/show_bug.cgi?id=702308

 js/ui/unlockDialog.js |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/unlockDialog.js b/js/ui/unlockDialog.js
index 75d1138..6a83ccf 100644
--- a/js/ui/unlockDialog.js
+++ b/js/ui/unlockDialog.js
@@ -41,7 +41,6 @@ const UnlockDialog = new Lang.Class({
         this._userName = GLib.get_user_name();
         this._user = this._userManager.get_user(this._userName);
 
-        this._failCounter = 0;
         this._firstQuestion = true;
 
         this._greeterClient = new Gdm.Client();