slapos_subscription_request: remove ill fitted constraints from Subscription Request

* Calling these constraints on Subscription Request brakes as some property are missing in subscription requests.

master/bt5/slapos_subscription_request/PortalTypePropertySheetTemplateItem/property_sheet_list.xml

@@ -15,8 +15,6 @@
   <item>Person</item>
   <item>Price</item>
   <item>Reference</item>
-  <item>SlapOSAccountingHostingSubscriptionConstraint</item>
-  <item>SlaposHostingSubscriptionConstraint</item>
   <item>SoftwareInstance</item>
   <item>Task</item>
   <item>TextDocument</item>

master/bt5/slapos_subscription_request/bt/template_portal_type_property_sheet_list

@@ -11,8 +11,6 @@ Subscription Request | HostingSubscription
 Subscription Request | Person
 Subscription Request | Price
 Subscription Request | Reference
-Subscription Request | SlapOSAccountingHostingSubscriptionConstraint
-Subscription Request | SlaposHostingSubscriptionConstraint
 Subscription Request | SoftwareInstance
 Subscription Request | Task
 Subscription Request | TextDocument