I figured it out! If you’re interested, I want to content-list.php in the theme editor and just removed this code:
<?php if ( has_post_thumbnail() ) { ?>
<?php $url = wp_get_attachment_url( get_post_thumbnail_id( $post->ID ) ); ?>
<?php the_post_thumbnail( ‘post_thumb’, array( ‘class’=>’alignleft’ ) ); ?>
<?php } ?>
Hope this helps someone! I was getting desperate!