pk: hoard_try_cleanup() SQL optimization
pk: hoard_try_cleanup() SQL optimization

- When removing dangling parcel records, substantially reduce the size of
the IN set by using SELECT DISTINCT

cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr