Bug 1667455 - Part 6: Stop importing Services.jsm from chrome-priv JS code, non-top-level or multi-line cases. r=kmag,perftest-reviewers,AlexandruIonescu,sparky

Differential Revision: https://phabricator.services.mozilla.com/D150895

toolkit/content/widgets/browser-custom-element.js

@@ -7,9 +7,6 @@
 // This is loaded into all XUL windows. Wrap in a block to prevent
 // leaking to window scope.
 {
-  const { Services } = ChromeUtils.import(
-    "resource://gre/modules/Services.jsm"
-  );
   const { AppConstants } = ChromeUtils.import(
     "resource://gre/modules/AppConstants.jsm"
   );