hide_product_variants/product_view.xml

<?xml version="1.0" encoding="UTF-8"?>
<openerp>
    <data>

        <!-- Avoid Menu of product Variants -->
        <delete model="ir.ui.menu" search="[('id','=',ref('product.menu_products'))]"/>
        <menuitem id="menu_products2" action="product.product_normal_action_sell" parent="base.menu_product" groups="group_no_variants" sequence="10"/>
        <delete model="ir.ui.menu" search="[('id','=',ref('stock.menu_product_variant_config_stock'))]"/>
        <menuitem
            action="product.product_normal_action" id="menu_product_variant_config_stock2"
            parent="stock.menu_product_in_config_stock" groups="group_no_variants" sequence="2"/>

        <!-- Avoid page of product Variants -->
        <record id="product_template_only_form_view_avoid_variants" model="ir.ui.view">
            <field name="name">product.template.product.form.avoid.variants</field>
            <field name="model">product.template</field>
            <field name="inherit_id" ref="product.product_template_only_form_view"/>
            <field name="arch" type="xml">
                <page name="variants" position="attributes">
                    <attribute name="groups">hide_product_variants.group_no_variants</attribute>
                </page>
            </field>
        </record>

        <record id="product.product_template_action" model="ir.actions.act_window">
            <field name="name">Products</field>
            <field name="type">ir.actions.act_window</field>
            <field name="res_model">product.product</field>
            <field name="view_mode">kanban,tree,form</field>
            <field name="view_type">form</field>
            <field name="view_id" ref="product.product_template_kanban_view"/>
            <field name="context">{"search_default_filter_to_sell":1}</field>
        </record>

        <record id="purchase.product_normal_action_puchased" model="ir.actions.act_window">
            <field name="name">Products</field>
            <field name="type">ir.actions.act_window</field>
            <field name="res_model">product.product</field>
            <field name="view_type">form</field>
            <field name="view_mode">kanban,tree,form</field>
            <field name="context">{"search_default_filter_to_purchase":1}</field>
            <field name="search_view_id" eval="False"/> <!-- Force empty -->
            <field name="view_id" eval="False"/> <!-- Force empty -->
            <field name="help" type="html">
              <p class="oe_view_nocontent_create">
                Click to define a new product.
              </p><p>
                You must define a product for everything you purchase, whether
                it's a physical product, a consumable or services you buy to
                subcontractants.
              </p><p>
                The product form contains detailed information to improve the
                purchase process: prices, procurement logistics, accounting data,
                available suppliers, etc.
              </p>
            </field>
        </record>

        <record id="product_normal_form_view_rev_name" model="ir.ui.view">
            <field name="name">product.product.form.rev_name</field>
            <field name="model">product.product</field>
            <field name="inherit_id" ref="product.product_normal_form_view"/>
            <field name="arch" type="xml">
                <field name="name" position="replace">
                    <field name="name"/>
                </field>
                <field name="product_tmpl_id" position="replace">
                    <field name="product_tmpl_id" invisible="1" required="0"/>
                </field>
            </field>
        </record>

        <record id="product_template_kanban_view_hide_variants" model="ir.ui.view">
            <field name="name">Product.template.product.kanban.hide_variants</field>
            <field name="model">product.template</field>
            <field name="inherit_id" ref="product.product_template_kanban_view"/>
            <field name="arch" type="xml">
                <xpath expr="/kanban/templates/t/div/div/a" position="replace"/>
            </field>
        </record>

    </data>
</openerp>