WordPress - Snippet - Disable content editor for specific pages

main.php

function disable_content_editor () {
  $pages_ids = array(2); // add your page / post id here

  if ($_GET['post']) {
    $post_id = $_GET['post'];
  } else {
	$post_id = $_POST['post_ID'];	
  }
	
  if (!isset($post_id)) return;
 
  foreach ($pages_ids as $page_id) {	
    if ($post_id == $page_id && 'edit' == $_GET['action']) {
      remove_post_type_support('page', 'editor');
    }
  }
}

add_action('admin_init', 'disable_content_editor');