Step 1:

Install module "Remove odoo.com bindings".

This will do the odoo debranding

Still "About Odoo" will be visible in top right menu, to further remove this

Step 2:

Replace the below code in base.xml within the module installed

disable_openerp_online/static/src/xml/base.xml

<?xml version="1.0" encoding="UTF-8"?>

<templates>

<t t-extend="UserMenu">

<t t-jquery="a[data-menu='account'], a[data-menu='help'], a[data-menu='about']">

this.parent().remove();

</t>

</t>

</templates>