wpSEO: Deactivate for some post types

gistfile1.txt

add_filter( 'wpseo_add_meta_boxes', 'prefix_wpseo_add_meta_boxes );

function prefix_wpseo_add_meta_boxes() {
	global $post;
	$post_types_without_seo = array( 'date', 'slide', 'video' );
	return !in_array( get_post_type($post), $post_types_without_seo);
}