If you wish to remove the comments/replies stuff directly, here’s the steps.
1) Open your ftp to: /wp-content/themes/twentyten or whatever theme dir your theme may be within.
2) Then open the loop-page.php, loop-single.php, and loop.php files. Search for the words ‘comments_template’. Comment out those lines by adding // to the front of them.
3) You can also try uploading a blank comments.php file… be sure to backup the org one first.