Wodpress - Remove Admin WP Logo and Submenu

wphack3.php

<?php

// Code to remove the WP Logo and Submenu from the Admin
add_action( 'wp_before_admin_bar_render', 'remove_logo_and_submenu' );
function remove_logo_and_submenu() {
	global $wp_admin_bar;
	$wp_admin_bar->remove_menu('wp-logo');
	$wp_admin_bar->remove_menu('about');
	$wp_admin_bar->remove_menu('wporg');
	$wp_admin_bar->remove_menu('documentation');
	$wp_admin_bar->remove_menu('support-forums');
	$wp_admin_bar->remove_menu('feedback');
	$wp_admin_bar->remove_menu('comments');
}
?>