remove_action('template_redirect', 'wp_shortlink_header', 11);

remove_action('wp_head', 'wp_generator');
add_filter('the_generator', '__return_empty_string');

add_filter('xmlrpc_enabled', '__return_false');
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<?xml-stylesheet type="text/xsl" href="https://mgevents.ch/wp-sitemap-index.xsl" ?>
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