Remove per org stats from stats_hero

Remove the stats here code that sends per org stats, since they are not used and are eating up space on the graphite box.

It is not clear to me if the org_name should also be used from the base state or it that still has value, so that is left in for now (I figured some modules using stats_hero must still send it).

Also not sure the best way to test this. Is there a recommended dev-vm setup to try?

@seth and anyone else interested.