Disable the help menu for admin only

Adding this snippet to the functions.php of your wordpress theme will display the help menu for the admin only.

function hide_help() {
    if(!is_admin()){
    echo '<style type="text/css">
            #contextual-help-link-wrap { display: none !important; }
          </style>';
    }
}
add_action('admin_head', 'hide_help');