[FIX] report_intrastat: Not allowed to delete record

It's not allowed to delete record from the tree view of intrastat report.

opw:692016

addons/report_intrastat/report_intrastat_view.xml

@@ -75,7 +75,7 @@
             <field name="name">report.intrastat.view</field>
             <field name="model">report.intrastat</field>
             <field name="arch" type="xml">
-                <tree string="Intrastat Data" create="false">
+                <tree string="Intrastat Data" create="false" delete="false">
                     <field name="name" />
                     <field name="month"/>
                     <field name="code"/>