hide core notices wp 5.0

function hide_update_notice_to_all_users()   {
        remove_action( 'admin_notices', 'update_nag', 3 );
        add_action('init', create_function('$a',"remove_action( 'init', 'wp_version_check' );"),2);
	add_filter('pre_option_update_core','__return_null');
	add_filter('pre_site_transient_update_core','__return_null');
}
add_action( 'admin_head', 'hide_update_notice_to_all_users', 1 );