This code use for Remove Custom Post Editor In WordPress, and this code adds your function.php file WordPress.
<?php
add_action( 'load-post.php', 'remove_post_type_edit_screen', 10 );
function remove_post_type_edit_screen() {
global $typenow;
if($typenow && $typenow === 'nomination-form'){
remove_post_type_support( 'nomination-form', 'editor' );
}
}
?>
