[FIX] Fix parsing error in group by view

Author: aurb9

estate/views/estate_property_views.xml

@@ -67,13 +67,9 @@
                 <field name="bedrooms"/>
                 <field name="living_area"/>
                 <field name="facades"/>
-                <separator/>
                 <filter string="Available" name="state"
                         domain="['|', ('state', '=', 'new'), ('state', '=', 'offer_received')]"/>
-                <separator/>
-                <group expand="1" string="Group By">
-                    <filter name="postcode" context="{'group_by': 'postcode', 'residual_visible': True}"/>
-                </group>
+                <filter string="Postcode" name="postcode" context="{'group_by':'postcode'}"/>
             </search>
         </field>
     </record>