Remove duplicate $baseurl template variable

- Remove unused $overwriteURL parameter in Renderer::replaceMacros

src/Module/Admin/Themes/Embed.php

@@ -4,8 +4,6 @@ namespace Friendica\Module\Admin\Themes;
 
 use Friendica\Core\L10n;
 use Friendica\Core\Renderer;
-use Friendica\Core\System;
-use Friendica\Core\Theme;
 use Friendica\Module\BaseAdminModule;
 use Friendica\Util\Strings;