Turn Off Post Revisions Entirely
Stops WordPress from saving a new revision every time you update a post or page.
define( 'WP_POST_REVISIONS', false );
WordPress normally keeps a copy of a post or page every time you save it, so you can roll back to an earlier version later. You can turn that off completely, or cap it at a fixed number instead (see the related snippet for that version).
Where it goes:
Add the line above to your wp-config.php.
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