Remove Post Custom Meta Box

Question

I created a custom post type.

When I click "Add new" for this post type, I see among other meta boxes a "Main Slider Item SEO" meta box. This SEO is superfluous. Can I remove it?

add_action( 'init', 'create_post_type' );
function create_post_type() {
    register_post_type( 'main_slider_item',
        array(
            'labels' => array(
                                  'name' => __( 'Main Slider Items' ),
                                  'singular_name' => __( 'Main Slider Item' ),
                                  'menu_name' => __( 'Main Slider' )
                        ),
                        'description' => "A banner with a text and button",
                        'public' => true,
                        'exclude_from_search' => true,
                        'show_in_nav_menus' => false,
                        'map_meta_cap' => false,
                        'supports' => array('title', 'thumbnail'),
                        'has_archive' => false,
                        'show_in_nav_menus' => false,
        )
    );
}

I also want to remove editing layout for this custom post type.

In fact for this post type I am going to display only the excerpt on the mainpage and am not going ever to display the page of the post.

Answer 1

I found a solution:

Set 'public' => false in register_post_type().

(After this I also need to set 'show_ui' => true to retain it in the admin interface.)