[gnome-documents] preview: Remove unused variable

[Debarshi Ray <debarshir src gnome org>]

commit 83d3895c44f1dc40d6bde706620a3ce223901d7b
Author: Debarshi Ray <debarshir gnome org>
Date:   Fri Mar 6 15:32:45 2015 +0100

    preview: Remove unused variable
    
    Fallout from 487ec071d54b0d33458b908f8f0de31e9d82f869
    
    https://bugzilla.gnome.org/show_bug.cgi?id=745172

 src/preview.js |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)
---
diff --git a/src/preview.js b/src/preview.js
index ea22671..c1bbd85 100644
--- a/src/preview.js
+++ b/src/preview.js
@@ -59,7 +59,6 @@ const PreviewView = new Lang.Class({
         this._fsToolbar = null;
         this._overlay = overlay;
         this._lastSearch = '';
-        this._loadError = false;
 
         Application.modeController.connect('fullscreen-changed', Lang.bind(this,
             this._onFullscreenChanged));
@@ -150,10 +149,7 @@ const PreviewView = new Lang.Class({
 
     _onLoadError: function(manager, doc, message, exception) {
         this._controlsVisible = true;
-
-        this._loadError = true;
         this._syncControlsVisible();
-        this._loadError = false;
     },
 
     _onActionStateChanged: function(action, state) {