Bug 1502758 - Remove the remnants of browser.contentblocking.enabled from the preferences code r=johannh

Differential Revision: https://phabricator.services.mozilla.com/D10019

--HG--
extra : moz-landing-system : lando

browser/components/preferences/in-content/privacy.js

@@ -474,7 +474,6 @@ var gPrivacyPane = {
       }
     }
 
-    clearIfNotLocked("browser.contentblocking.enabled");
     clearIfNotLocked("urlclassifier.trackingTable");
     clearIfNotLocked("network.cookie.cookieBehavior");
     clearIfNotLocked("network.cookie.lifetimePolicy");

browser/components/preferences/in-content/tests/browser_spotlight.js

@@ -52,7 +52,6 @@ add_task(async function test_form_autofill_section() {
 
 add_task(async function test_change_cookie_settings() {
   await SpecialPowers.pushPrefEnv({set: [
-    ["browser.contentblocking.enabled", true],
     ["browser.contentblocking.trackingprotection.ui.enabled", true],
     ["browser.contentblocking.rejecttrackers.ui.enabled", true],
   ]});