slapos_accounting: invoice payment mode is fetched from trade condition

master/bt5/slapos_accounting/SkinTemplateItem/portal_skins/slapos_simulation/SaleInvoiceTransaction_postSlapOSGeneration.py

@@ -11,16 +11,6 @@ price_currency = invoice.getPriceCurrency()
 if invoice.getResource() != price_currency:
   invoice.setResource(price_currency)
 
-trade_condition = invoice.getSpecialiseValue(
-  portal_type=(
-    'Purchase Trade Condition',
-    'Sale Trade Condition',
-    'Internal Trade Condition',
-  )
-)
-if (invoice.getPaymentMode("") == "") and (trade_condition is not None):
-  invoice.setPaymentModeValue(trade_condition.getPaymentConditionPaymentMode())
-
 if invoice.getCausality(None) is None:
   causality_list = []
   for line in invoice.objectValues():