[FIX] project: double rating document name in search

The filter parent_res_name was already in the original search view so
the duplicated one was not needed and caused to have two times the
filter in the search view with possible different behavior.

opw-1949559
closes #31707

Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>

addons/project/views/rating_views.xml

@@ -8,7 +8,6 @@
         <field name="mode">primary</field>
         <field name="arch" type="xml">
             <xpath expr="//filter[@name='resource']" position="after">
-                <field name="parent_res_name"/>
                 <filter string="Project" name="groupby_project" context="{'group_by': 'parent_res_name'}"/>
             </xpath>
             <xpath expr="/search" position="inside">