Stop all wordpress updates

/*
********************************************************************************************************************
****************************** Stop wordpress / plugin / theme updates *********************************************
********************************************************************************************************************
*/

function shakti_remove_wp_core_updates()
{
    global $wp_version;
    return (object)array(
        'last_checked' => time(),
        'version_checked' => $wp_version
    );
}

add_filter('pre_site_transient_update_core','shakti_remove_wp_core_updates');
add_filter('pre_site_transient_update_plugins','shakti_remove_wp_core_updates');
add_filter('pre_site_transient_update_themes','shakti_remove_wp_core_updates');