res_partner.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
<data>


<!-- Avoid creation of bank accounts linked to contacts.
Note that, when you use the res.partner.bank menu entry,
there is a domain on the 'partner_id' field of res.partner.bank (base module)
which prevents the selection of a contact -->
<record id="partner_view_buttons" model="ir.ui.view">
    <field name="name">account_payment_mode.res_partner_form</field>
    <field name="model">res.partner</field>
    <field name="inherit_id" ref="account.partner_view_buttons"/>
    <field name="arch" type="xml">
        <group name="banks" position="attributes">
            <attribute name="attrs">{'invisible': [('parent_id', '!=', False)]}</attribute>
        </group>
    </field>
</record>


</data>
</openerp>