try below code for Magento 2.
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<head>
<remove src="https://selfservice.robinhq.com/external/robin/XXXX.js"/>
</head>
http://devdocs.magento.com/guides/v2.0/frontend-dev-guide/layouts/xml-manage.html#layout_markup_css