Revert "Merge branch 'Graphs' of https://github.com/prihoda/ZUMScore into prihoda-Graphs"

This reverts commit c124d94e1d803829ece5b88a35a5caf1f77adafa, reversing
changes made to 15f52fbde61f2ee2db23f29d4e638d6f380dfaec.