How to Hide the "Auto Alt Text" Admin Menu

function plt_hide_auto_alt_text_for_images_menus() {
	//Hide the "Auto Alt Text" menu.
	remove_menu_page('auto-alt-text-for-images');
}

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

Where do I put this code?