slapos_accounting: do not require Project on Sale Invoice Transaction

master/bt5/slapos_accounting/PortalTypePropertySheetTemplateItem/property_sheet_list.xml

@@ -45,7 +45,6 @@
  <portal_type id="Sale Invoice Transaction">
   <item>SlapOSAccountingSaleInvoiceTransactionConstraint</item>
   <item>SlapOSLedgerConstraint</item>
-  <item>SlapOSVirtualMasterSourceProjectConstraint</item>
  </portal_type>
  <portal_type id="Sale Packing List">
   <item>SlapOSAccountingSalePackingListConstraint</item>

master/bt5/slapos_accounting/bt/template_portal_type_property_sheet_list

@@ -19,7 +19,6 @@ Purchase Invoice Transaction | SlapOSLedgerConstraint
 Purchase Invoice Transaction | SlapOSVirtualMasterSourceProjectConstraint
 Sale Invoice Transaction | SlapOSAccountingSaleInvoiceTransactionConstraint
 Sale Invoice Transaction | SlapOSLedgerConstraint
-Sale Invoice Transaction | SlapOSVirtualMasterSourceProjectConstraint
 Sale Packing List Line | SlapOSAccountingSalePackingListLineConstraint
 Sale Packing List | SlapOSAccountingSalePackingListConstraint
 Sale Packing List | SlapOSLedgerConstraint