Disable and Delete Post Revisions in WordPress

WordPress post revisions are automatically created whenever you edit an existing post. This is extremely annoying for some site owners as it creates many additional records in your database and at some point you end up having more post revisions than actual posts… So what you need to do is turn off WordPress post revisions and then delete the revisions that have been created in your database.

Disable WordPress Post Revisions
In order to disable WordPress Post Revisions all you have to do is add this in your wp-config.php
define('WP_POST_REVISIONS', …