How to remove the 'Reply' link in comments?
If you wanted to remove all links, you could do it in a template file like this:

hide($content['links']);
print render($content);


But I don't know how to hide just the comment reply link this way. Based on a short article here, it looks like you can unset the reply link with a preprocess function in template.php like this:

function themename_preprocess_comment(&amp;$variables) {
  unset($variables['content']['links']['comment']['#links']['comment-reply']);
}