stock_disable_force_availability_button/views/stock_view.xml

<?xml version="1.0" encoding="UTF-8"?>
<openerp>
    <data>
        <record model="ir.ui.view" id="stock_picking_disable_button_form_view">
            <field name="name">stock.picking.disable_button.form</field>
            <field name="model">stock.picking</field>
            <field name="inherit_id" ref="stock.view_picking_form" />
            <field name="arch" type="xml">
                <button name="force_assign" position="attributes">
                    <attribute name="groups">stock.group_stock_force_availability</attribute>
                </button>
            </field>
        </record>

        <record model="ir.ui.view" id="stock_move_disable_button_form_view">
            <field name="name">stock.move.disable_button.form</field>
            <field name="model">stock.move</field>
            <field name="inherit_id" ref="stock.view_move_form" />
            <field name="arch" type="xml">
                <button name="force_assign" position="attributes">
                    <attribute name="groups">stock.group_stock_force_availability</attribute>
                </button>
            </field>
        </record>

        <record model="ir.ui.view" id="stock_move_picking_disable_button_form_view">
            <field name="name">stock.move.picking.disable_button.form</field>
            <field name="model">stock.move</field>
            <field name="inherit_id" ref="stock.view_move_picking_form" />
            <field name="arch" type="xml">
                <button name="force_assign" position="attributes">
                    <attribute name="groups">stock.group_stock_force_availability</attribute>
                </button>
            </field>
        </record>
    </data>
</openerp>