How can I disable the link to the comments feed?

Using wp_head() results in the following markup:

<link rel="alternate" href="http://example.com/blog/post/comments/feed/"/>

It’s not controlled by an action (I already removed the feed_links_extra action), and adding a filter to the post_comments_feed_link that returns an empty string doesn’t keep the link from appearing.

How can I disable this?

Thanks!