[FIX] l10n_sk: fix visibility for company_registry field when l10n_cz and l10n_sk are installed

In a multicompany setup when l10n_cz is installed after l10n_sk then the
Company ID field disappears from Contacts form view if current company
is not a CZ company (fiscal_country_codes != CZ).  On the other hand if
the current company is a CZ company then the field is doubled in the
form view.

This change prevents the field from disappearing by reverting the
visibility condition change introduced by each of the l10n_sk and
l10n_cz module because they are clashing.

Part-of: odoo/odoo#158605

addons/l10n_cz/views/res_partner_views.xml

@@ -5,9 +5,6 @@
         <field name="model">res.partner</field>
         <field name="inherit_id" ref="account.view_partner_property_form"/>
         <field name="arch" type="xml">
-             <xpath expr="//field[@name='company_registry']" position="replace">
-                <field name="company_registry" invisible="'CZ' not in fiscal_country_codes"/>
-            </xpath>
             <xpath expr="//field[@name='vat']" position="before">
                 <field name="company_registry" invisible="'CZ' not in fiscal_country_codes"/>
             </xpath>

addons/l10n_sk/views/res_partner_views.xml

@@ -5,9 +5,6 @@
         <field name="model">res.partner</field>
         <field name="inherit_id" ref="account.view_partner_property_form"/>
         <field name="arch" type="xml">
-             <xpath expr="//field[@name='company_registry']" position="replace">
-                <field name="company_registry" invisible="'SK' not in fiscal_country_codes"/>
-            </xpath>
             <xpath expr="//field[@name='vat']" position="before">
                 <field name="company_registry" invisible="'SK' not in fiscal_country_codes"/>
             </xpath>