form-allowed-tags

find comment_form() probably in comments.php of your theme;

http://codex.wordpress.org/Function_Reference/comment_form

edit it to:

<?php comment_form(array('comment_notes_after' => '')); ?>

http://wordpress.org/support/topic/get-rid-of-reply-markup-on-twenty-ten?replies=7

link to your site?

i don’t see the html text below the comments;

can you post a link directly to a post/page with comments, showing the unwanted text?

try to clear your browser cache: press ‘CTRL F5’ or press the ‘reload’ button on your browser.