removing all titles

hi, I’m trying to remove all of the titles from my posts. I managed to get rid of them showing on the index page, but I can’t find the code to remove the titles when you view the archives or click on tags and catagories. here is the code I found to remove the titles from the index:

<h2><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a></h2>

but I can’t seem to find that same code in any of the other php files. does anyone know what code I need to delete to remove the titles from the the archives and tag pages? here’s the examples:

index page with removed titles: https://portfoliosfriend.com/

tag category with titles still there: https://portfoliosfriend.com/index.php/tag/illustration/

archive page with titles still there: https://portfoliosfriend.com/index.php/2008/05/

thanks! ??