How to get rid of article ID on Joomla URL

//Open components\com_content\router.php in an editor and make a small changes:
//in function ContentBuildRoute(&$query) replace line 27

$advanced    = $params->get('sef_advanced_link', 0);
//with
$advanced    = $params->get('sef_advanced_link', 1);

//in function ContentParseRoute($segments) replace line 208
$advanced    = $params->get('sef_advanced_link', 0);
//with
$advanced    = $params->get('sef_advanced_link', 1);

//Comment out this lines

if (strpos($segments[0], ':') === false) {
    $vars['view'] = 'article';
    $vars['id'] = (int)$segments[0];
    return $vars;
}
//so it would be

/*
if (strpos($segments[0], ':') === false) {
    $vars['view'] = 'article';
    $vars['id'] = (int)$segments[0];
    return $vars;
}
*/