WP Admin UI PRO is required. You can go PRO here.
To hide from WordPress, a metabox, go to WP Admin UI, Metaboxes.
You must first generate a list of all the metaboxes present on your site.
To do this, click the Refresh button.
Wait a few moments to see the list of metaboxes sorted by custom post types.
To hide a metabox, simply check its associated box.
Don’t forget to click Save changes.