Disable MOAB's stl reader
An update to MOAB's lastest master caused the stl importer to fail. Until this is fixed, we temporarily disable MOAB's stl reader (we still have VTK's stl reader, if VTK is enabled).
An update to MOAB's lastest master caused the stl importer to fail. Until this is fixed, we temporarily disable MOAB's stl reader (we still have VTK's stl reader, if VTK is enabled).