rkb81
2/10/2016 - 2:14 PM

From https://premium.wpmudev.org/blog/hide-the-wordpress-update-notification/

function hide_update_notice_to_all_but_admin_users()
{
    if (!current_user_can('update_core')) {
        remove_action( 'admin_notices', 'update_nag', 3 );
    }
}
add_action( 'admin_head', 'hide_update_notice_to_all_but_admin_users', 1 );