To disable revisions (publications) in WordPress, add one line to the wp-config.php file:
Second option change true to false in /wp-includes/default-constants.php
if ( !defined('WP_POST_REVISIONS') ) define('WP_POST_REVISIONS', false);
To limit the number of revisions (publications), specify a number instead of true or false.
To delete revisions (publications), execute a query in the database:
DELETE FROM wp_posts WHERE post_type = "revision";
You can also use a plugin to manage the cleanup of revisions (publications), there are quite a few of them.
I want to note that disabling revisions is not advisable, since they allow you to track changes in the article and thereby make a backup copy.