social/mail_no_user_assign_notification/data/ir_config_parameter.xml

<?xml version="1.0" encoding="utf-8" ?>
<odoo noupdate="1">
    <record id="no_user_assign_notification_models" model="ir.config_parameter">
        <field name="key">mail_no_user_assign_notification.models</field>
        <field name="value" />
    </record>
</odoo>