dont enforce calculation maybe it's a parse

History.md

@@ -2,6 +2,7 @@
 #822
 #843
 #854
+#786
 add getCalculation on calculatedInvoice
 Transactioncalculator getTaxDetails to include correct percentage, calculated amounts
 

library/src/main/java/org/mustangproject/CalculatedInvoice.java

@@ -103,7 +103,6 @@ public class CalculatedInvoice extends Invoice implements Serializable {
 	 * @return a updated transactioncalulator
 	 */
 	public TransactionCalculator getCalculation() {
-		calculate();
 		return tc;
 	}