Bug 1881798 - remove the legacy ETP webcompat reporter; r=pbz,desktop-theme-reviewers,emilio

Differential Revision: https://phabricator.services.mozilla.com/D203022

Author: wisniewskit

browser/app/profile/firefox.js

@@ -2102,8 +2102,6 @@ pref("browser.contentblocking.features.strict", "tp,tpPrivate,cookieBehavior5,co
 // lists enabled.
 pref("browser.contentblocking.customBlockList.preferences.ui.enabled", false);
 
-pref("browser.contentblocking.reportBreakage.url", "https://tracking-protection-issues.herokuapp.com/new");
-
 // Enable Protections report's Lockwise card by default.
 pref("browser.contentblocking.report.lockwise.enabled", true);