Remove tracking protection tour.

browser/components/privatebrowsing/content/aboutPrivateBrowsing.js

@@ -63,13 +63,9 @@ document.addEventListener("DOMContentLoaded", function () {
  document.getElementById("favicon")
          .setAttribute("href", FAVICON_PRIVACY);
  tpToggle.addEventListener("change", toggleTrackingProtection);
- document.getElementById("startTour")
-         .addEventListener("click", dontShowIntroPanelAgain);
 
  let formatURLPref = Cc["@mozilla.org/toolkit/URLFormatterService;1"]
                        .getService(Ci.nsIURLFormatter).formatURLPref;
- document.getElementById("startTour").setAttribute("href",
-                    formatURLPref("privacy.trackingprotection.introURL"));
  document.getElementById("learnMore").setAttribute("href",
                     formatURLPref("app.support.baseURL") + "private-browsing");
 
@@ -89,10 +85,3 @@ function toggleTrackingProtection() {
    new CustomEvent("AboutPrivateBrowsingToggleTrackingProtection",
                    {bubbles: true}));
 }
-
-function dontShowIntroPanelAgain() {
- // Ask chrome to disable the doorhanger
- document.dispatchEvent(
-   new CustomEvent("AboutPrivateBrowsingDontShowIntroPanelAgain",
-                   {bubbles: true}));
-}

browser/components/privatebrowsing/content/aboutPrivateBrowsing.xhtml

@@ -69,9 +69,6 @@
 
       <section class="section-main">
         <p>&trackingProtection.description2;</p>
-        <p>
-          <a id="startTour" class="button">&trackingProtection.startTour1;</a>
-        </p>
       </section>
 
       <section class="section-main">