Cleanup: Remove chType from coding structure to ease parallelization
chType was removed from CodingStructure in VTM-1 but was reintroduced with the integration of IBC. To ease parallelization, chType is removed in this merge request.
chType was removed from CodingStructure in VTM-1 but was reintroduced with the integration of IBC. To ease parallelization, chType is removed in this merge request.