Deleted 1 heuristic + added a potential fix
Deleted 1 heuristic + added a potential fix

HEUR: Deleted heuristic "Switch structures (un-ordered)". The SPP was calculated based on the case id and it can be an arbitrary value (even int64_t!).
BUG: Added potential fix for a bug reading switch structures that seems to happen only in MacOSX.

joxeankoret/diaphora