Quick and easy (but not the best answer)–
1) Navigate to Appearance > Editor > Comments.php
2) Toward the bottom of the code in the comments file you will find the following line of code:
<p class=”nocomments”><?php _e( ‘Comments are closed.’, ‘magazine-basic’ ); ?></p>
3) If you delete the text “Comments are closed.” and update the file, the text will vanish from your pages.