partial rollback of a fix for void->oid cluster in 1.31
partial rollback of a fix for void->oid cluster in 1.31

this changes causes crashes.

this fix causes crashes. I propose not to do void->oid clusters for the moment

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb