Bug 1765173 - Remove duplicated menubar.ftl load; r=platform-i18n-reviewers,jfkthame

Differential Revision: https://phabricator.services.mozilla.com/D143923

browser/base/content/hiddenWindowMac.xhtml

@@ -13,10 +13,6 @@
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
         data-l10n-sync="true">
 
-  <linkset>
-    <html:link rel="localization" href="browser/menubar.ftl"/>
-  </linkset>
-
 #include macWindow.inc.xhtml
 
 <!-- Dock menu -->