[gnome-shell] volume: Remove some unused variables

[Jasper St. Pierre <jstpierre src gnome org>]

commit 23dd5cc160c4054fd497e35d1e821ca5898282cb
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Tue Apr 23 19:25:49 2013 -0400

    volume: Remove some unused variables
    
    https://bugzilla.gnome.org/show_bug.cgi?id=701755

 js/ui/status/volume.js |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)
---
diff --git a/js/ui/status/volume.js b/js/ui/status/volume.js
index f4577b4..ce5f4fd 100644
--- a/js/ui/status/volume.js
+++ b/js/ui/status/volume.js
@@ -10,8 +10,6 @@ const Signals = imports.signals;
 const PanelMenu = imports.ui.panelMenu;
 const PopupMenu = imports.ui.popupMenu;
 
-const VOLUME_ADJUSTMENT_STEP = 0.05; /* Volume adjustment step in % */
-
 const VOLUME_NOTIFY_ID = 1;
 
 // Each Gvc.MixerControl is a connection to PulseAudio,
@@ -44,7 +42,6 @@ const StreamSlider = new Lang.Class({
         this.item.addMenuItem(this._slider);
 
         this._stream = null;
-        this._shouldShow = true;
     },
 
     get stream() {