WordPress: remove About Yourself box in admin user profile

// Callback function to remove default bio field from user profile page
// https://gist.github.com/dkomando/6214787a8d36d9f13c9b

if(!function_exists('remove_bio_box')){
	function remove_bio_box($buffer){
		$buffer = preg_replace('/<tr class=\"user-description-wrap\"[\s\S]*?<\/tr>/','',$buffer,1);
		return $buffer;
	}
	function user_profile_subject_start(){ ob_start('remove_bio_box'); }
	function user_profile_subject_end(){ ob_end_flush(); }
}
add_action('admin_head-profile.php','user_profile_subject_start');
add_action('admin_footer-profile.php','user_profile_subject_end');