Remove Help Button from Backoffice

[SPACE 92]

I would like to hide the help button form the backoffice, i already removed the "demo button" with an overide from the AdminDashboardController, i don't know the name of the button wish is used. Someone knows the name of the button ? thanks a lot in advance, i'm running on prestashop 1.7.3

 

<?php

class AdminDashboardController extends AdminDashboardControllerCore {
    public function initPageHeaderToolbar()
    {
        parent::initPageHeaderToolbar();
        unset($this->page_header_toolbar_btn['switch_demo']);
    }
}

[Ali Samie]

i think instead of override which is not recommended you can add a custom css with a custom module
 

#toolbar-nav .btn-help,
.toolbar-icons .btn-help {
  display: none;
}