[gnome-shell] telepathyClient: Remove unused variable

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

commit df1bed941dcdfac8ddd99702332c52c80ef91905
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Wed May 28 13:09:43 2014 -0400

    telepathyClient: Remove unused variable

 js/ui/components/telepathyClient.js |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/components/telepathyClient.js b/js/ui/components/telepathyClient.js
index c42f58e..3593ad0 100644
--- a/js/ui/components/telepathyClient.js
+++ b/js/ui/components/telepathyClient.js
@@ -783,7 +783,6 @@ const ChatNotification = new Lang.Class({
 
         this._createScrollArea();
         this._lastGroup = null;
-        this._lastGroupActor = null;
 
         // Keep track of the bottom position for the current adjustment and
         // force a scroll to the bottom if things change while we were at the