[gnome-maps] MainWindow: Remove some dead code

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 0b3969d089f8a4d4ec072a6e9c813ef0852183a4
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Tue Aug 27 04:22:28 2013 +0300

    MainWindow: Remove some dead code
    
    https://bugzilla.gnome.org/show_bug.cgi?id=706726

 src/mainWindow.js |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/src/mainWindow.js b/src/mainWindow.js
index 94bd7ef..9d33ceb 100644
--- a/src/mainWindow.js
+++ b/src/mainWindow.js
@@ -59,10 +59,8 @@ const MainWindow = new Lang.Class({
         this._configureId = 0;
         let ui = Utils.getUIObject('main-window', [ 'app-window',
                                                     'window-content',
-                                                    'search-entry',
-                                                    'track-user-button']);
-        let grid = ui.windowContent,
-            toggle = ui.trackUserButton;
+                                                    'search-entry' ]);
+        let grid = ui.windowContent;
         this._searchEntry = ui.searchEntry;
         this.window = ui.appWindow;
         this.window.application = app;