Disable meta box on some post types

The meta box clutters up every post type except attachments and the reviews themselves by default. It’d be great to be able to remove it from certain post types. The minimum would be adding a filter to wp-customer-reviews-3-admin.php, line 708ish. Something like:

unset($post_types['attachment']);
unset($post_types[$my_post_type]);

// Allow us to unset other post types
$post_types = apply_filters('wp-customer-reviews-eligible-post-types', $post_types);