Here i used create="false" and edit="false" it just hide the create and edit button but i want to hide save button in form view so anyone help me to hide save button in form view.
<record model="ir.ui.view" id="organization_chart_form_view">
<field name="name">organization.chart.form.view</field>
<field name="model">organization.chart</field>
<field name="type">form</field>
<field name="arch" type="xml">
<form string="Graph" create="false" edit="false">
<field name="name" widget="test"/>
</form>
</field>
</record>