How can I remove the WP menu from the admin bar?

Question

I never use the WP menu (the logo and its child items) except when I click it accidentally. And it is wasting my time when I navigate per keyboard. Plus, the support page is not our site.

How can I remove it?

Screenshot of the menu:

Answer 1

This menu is added in WP_Admin_Bar::add_menus() with an action:

add_action( 'admin_bar_menu', 'wp_admin_bar_wp_menu', 10 );

To remove it take the same action – just one step later. The following code works as a mu plugin or as a regular plugin:

<?php # -*- coding: utf-8 -*-
/**
 * Plugin Name: Remove WP Menu From Tool Bar
 */
if ( ! function_exists( 't5_remove_wp_menu' ) )
{
    // The action is added with a priority of 10, we take one step later.
    add_action( 'init', 't5_remove_wp_menu', 11 );

    /**
     * Remove the WP menu action.
     */
    function t5_remove_wp_menu()
    {
        is_admin_bar_showing() &&
            remove_action( 'admin_bar_menu', 'wp_admin_bar_wp_menu', 10 );
    }
}

It has a GitHub address too.

After the installation the sites menu is the first one:

See also this great answer for other menus and more details about the inner workings of the admin bar/tool bar.

Answer 2

also possible, only as hint:

add_action( 'admin_bar_menu',    'fb_admin_bar_menu', 25 );

/**
 * Removes the "W" logo from the admin menu
 *
 * @access public
 */
function fb_admin_bar_menu( $admin_bar ) {

    $admin_bar->remove_node( 'wp-logo' );
}