You might have added default recent comment widget on your WordPress site, which allows anyone to add links on their name. It might be risky for the SEO if someone adds a link of less authority on your blog, which would then be visible on all pages. To remove a link you have to follow a few easy steps that are shown below.
To remove a link, first you need to go to wp-include folder of WordPress and you have to find and open default-widgets.php.Then search get_comment_author_link() from any code editor and replace it with get_comment_author(). Save the file. Afterwards, open your website, remove cache and refresh the page to view the change.
I hope this easy tutorial will solve your problem and if you can’t change your WordPress files then it’s better to try some decent comments widget plugins like Better WordPress Recent Comments.To find more WordPress tutorials from Hqtips check here