Hide a meta box in WordPress. Customize the code and add to you themes functios file.

remove-meta-box.php

<?php
// Open your theme's functions.php file or create a custom plugin.
// Add the following code:

Add the following code:

function remove_custom_meta_boxes() {
    // Example: remove the 'slugdiv' meta box from the post editor screen
    remove_meta_box('slugdiv', 'post', 'normal'); 

    // Add more meta boxes to remove, if necessary
    // Example: remove 'authordiv' meta box from pages
    remove_meta_box('authordiv', 'page', 'normal'); 
}
add_action('admin_menu', 'remove_custom_meta_boxes');


// 'slugdiv' is the ID of the meta box you want to remove.
// 'post' or 'page' is the post type.
// 'normal' defines the context of the meta box (can also be 'side' or 'advanced').

// You can use this approach to hide any meta box by specifying its ID. If you don’t know the ID of a meta box, you can inspect the page’s HTML in the WordPress admin to find it.

?>