[update] disable quick create on kanban

views/crm_lead_view.xml

 <odoo>
   <data>
+    <!-- KANBAN -->
+    <record id="crm_case_kanban_view_leads" model="ir.ui.view">
+      <field name="name">mvh.crm.view.form</field>
+      <field name="model">crm.lead</field>
+      <field name="inherit_id" ref="crm.crm_case_kanban_view_leads"/>
+      <field name="arch" type="xml">
+        <xpath expr="//kanban" position="attributes">
+          <attribute name="quick_create">false</attribute>
+        </xpath>
+      </field>
+    </record>
 
+    <!-- FORM -->
     <record id="mvh_crm_view_form" model="ir.ui.view">
       <field name="name">mvh.crm.view.form</field>
       <field name="model">crm.lead</field>