wordpress remove editor

remove_editor.php

/*
	Disable content editor for specific page template
*/
add_action('admin_init', 'hide_editor');

function hide_editor() {
    $post_id = $_GET['post'] ? $_GET['post'] : $_POST['post_ID'];
    if (!isset($post_id)) return;
    $template_file = get_post_meta($post_id, '_wp_page_template', true);

    if ($post_id == 2) {
        echo "remove editor";
        remove_post_type_support('page', 'editor');
    }
    if ($template_file == 'post.php') { // edit the template name
        remove_post_type_support('page', 'editor');
    }
}