[FIX] caldav_sync: error in data XML

Remove the numbercall and doall fields from the data to conform
to the new structure of ir.cron model since 18.0.

caldav_sync/__manifest__.py

@@ -8,7 +8,7 @@
 
 {
     "name": "CalDAV Synchronization",
-    "version": "18.0.0.6.0",
+    "version": "18.0.0.6.1",
     "license": "LGPL-3",
     "category": "Productivity",
     "summary": "Synchronize Odoo Calendar Events with CalDAV Servers",

caldav_sync/data/caldav_sync_data.xml

@@ -6,8 +6,6 @@
         <field name="code">model.poll_caldav_server()</field>
         <field name="interval_number">10</field>
         <field name="interval_type">minutes</field>
-        <field name="numbercall">-1</field>
-        <field name="doall" eval="False" />
         <field name="active" eval="True" />
     </record>
 </odoo>