Wordpress - Remove Logo from Admin Bar

function.php

<?php
/* 
  * Remove the WordPress Logo from the WordPress Admin Bar 
  */  
 function remove_wp_logo() {  
     global $wp_admin_bar;  
     if(!is_super_admin()){
         $wp_admin_bar->remove_menu('wp-logo');  
     }
 }  
 add_action( 'wp_before_admin_bar_render', 'remove_wp_logo' );
?>