Hello,

In your_module/static/src/xml ... put an xml file contains: [add this file to the __openerp__.py in the 'qweb' key]

<?xml version="1.0" encoding="UTF-8"?>
<templates>
    <t t-extend="FieldBinaryFile">
        <t t-jquery="span:contains('Select')" t-operation="replace">
            <span></span>
        </t>
        <t t-jquery="span:contains('Save As')" t-operation="replace">
            <span></span>
        </t>
        <t t-jquery="span:contains('Clear')" t-operation="replace">
            <span></span>
        </t>
    </t>
</templates>

This will extend the template and eliminate the words [Save As, Clear, and Select] from the widget ...

Hope this could helps  & works