How to Hide the "Convert WPBakery to Elementor" Admin Menu

function plt_hide_convert_wpbakery_to_elementor_menus() {
	//Hide the "Tools → Convert WPBakery to Elementor" menu.
	remove_submenu_page('tools.php', 'wpbakery-to-eIementor');
}

add_action('admin_menu', 'plt_hide_convert_wpbakery_to_elementor_menus', 11);

Where do I put this code?