Purge hive.optimize.sort.dynamic.partition

hive.optimize.sort.dynamic.partition has been replace with hive.optimize.sort.dynamic.partition.threshold .  It has been marked as "deprecated", but it's actually totally defunct in the current code base.  Deprecation would allow an admin to continue to use it (maybe as an alias to threadshold = 0/-1), but that is not the case here.

Remove all references to "hive.optimize.sort.dynamic.partition" in the q tests and remove HIVEOPTSORTDYNAMICPARTITION all together.