Made PipingSubCalculatorFactory a singleton. Removed obsolete InputParameterCalculationServiceConfig and its test. Removed obsolete Ringtoets.Piping.InputParameterCalculation.Test and Ringtoets.Piping.InputParameterCalculation.TestUtil projects. Made derived properties not publically modifiable. Related to Issue [WTI-382] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@2673 5a3db67b-de53-47b5-99c8-a1c30a6650e2