--- a/testing/marionette/driver.js
+++ b/testing/marionette/driver.js
@@ -145,21 +145,16 @@ this.GeckoDriver = function(appId, serve
 
   // The curent context decides if commands should affect chrome- or
   // content space.
   this.context = Context.Content;
 
   this.sandboxes = new Sandboxes(() => this.getCurrentWindow());
   this.legacyactions = new legacyaction.Chain();
 
-  this.timer = null;
-  this.inactivityTimer = null;
-
-  this.testName = null;
-
   this.capabilities = new session.Capabilities();
 
   this.mm = globalMessageManager;
   this.listener = proxy.toListener(() => this.mm, this.sendAsync.bind(this),
       () => this.curBrowser);
 
   // points to an alert instance if a modal dialog is present
   this.dialog = null;