layout: Remove an unused variable

The tray barrier was removed when the hot corner to activate the message
tray was removed.

https://bugzilla.gnome.org/show_bug.cgi?id=677215

diff --git a/js/ui/layout.js b/js/ui/layout.js
index 6791ebae52e00d82349133051a9a10c17f11c3ff..4bc41c6ae51961238add2187f1264ae39b9f126b 100644 (file)
--- a/js/ui/layout.js
+++ b/js/ui/layout.js
@@ -114,7 +114,6 @@ const LayoutManager = new Lang.Class({
         this._background = null;
         this._leftPanelBarrier = 0;
         this._rightPanelBarrier = 0;
-        this._trayBarrier = 0;
 
         this._inOverview = false;
         this._updateRegionIdle = 0;