Want to get rid of admin bar… no, we mean REALLY get rid of it. Leave no trace of it every existing? Wishing admin-bar was never born? We have a solution for you. Below is code delivered from a code-hitman that wishes to remain anonymous. Kill your admin bar today with this code snippet:
/* Disable the Admin Bar. */
add_filter( 'show_admin_bar', '__return_false' );
remove_action('wp_head', '_admin_bar_bump_cb');
wp_deregister_script('admin-bar');
wp_deregister_style('admin-bar');