Extracted TestStructuresOutput for reuse. Remove calculation results when input changes for closing structures failure mechanism. Related to Issue [WTI-973]git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@7545 5a3db67b-de53-47b5-99c8-a1c30a6650e2Former-commit-id: f929ee8cdcbc1fdf43c9051695222d306d9ca729Former-commit-id: 7355f2162ab9ef94256533232413bf6437017576