Removing Custom Post Types From Parent Theme

I am working on a child theme to a ‘portfolio’ style site. It includes a ‘Projects’ custom post type I do not want to use in the child theme. It is called by a add_action( 'init', 'create_post_types' );
When I try to remove it with a remove_action in my child theme’s functions.php file it doesn’t respond and still appears in the admin panel on the dashboard. What gives?!