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// Remove RSS Feed 
function fastwp_disable_feed() {
 wp_die(__('<p>Feed nicht verfügbar. Schau mal hier: <a href="'.get_bloginfo('url').'">Homepage</a>!</p>'));
}
add_action('do_feed', 'fastwp_disable_feed', 1);
add_action('do_feed_rdf', 'fastwp_disable_feed', 1);
add_action('do_feed_rss', 'fastwp_disable_feed', 1);
add_action('do_feed_rss2', 'fastwp_disable_feed', 1);
add_action('do_feed_atom', 'fastwp_disable_feed', 1);