Remove comments completely from settings

For every website we create we never use comments so we just disable them in settings. But I noticed that queries for them are still generated on each page in backend, for example in all posts list there are 2 queries triggered each time

SELECT comment_approved, COUNT( * ) AS total 
FROM wp_comments 
GROUP BY comment_approved

SELECT comment_post_ID, COUNT(comment_ID) as num_comments
FROM wp_comments
WHERE comment_post_ID IN ( XXX )
AND comment_approved = '0'
GROUP BY comment_post_ID

It would be nice to optimize that a bit.

This removes the page Comment from admin menu but queries are still generated

function df_disable_comments_admin_menu() {
remove_menu_page(‘edit-comments.php’);
}
add_action(‘admin_menu’, ‘df_disable_comments_admin_menu’);