odoo16/addons/mass_mailing_sms/wizard/sms_composer_views.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <record id="sms_composer_view_form" model="ir.ui.view">
        <field name="name">sms.composer.views.inherit.sms</field>
        <field name="model">sms.composer</field>
        <field name="inherit_id" ref="sms.sms_composer_view_form"/>
        <field name="arch" type="xml">
            <xpath expr="//field[@name='res_model']" position="after">
                <field name="utm_campaign_id" groups="mass_mailing.group_mass_mailing_campaign"
                    invisible="1"/>
                <field name="mailing_id" invisible="1"/>
            </xpath>
        </field>
    </record>

</odoo>