Drop support for the deprecated non-generic datum tables power_datum, consumption_datum, price_datum, and hardware_control_datum. Once NET-49 is deployed, these tables will not gain any new data, and they essentially hold copies of all the data in the da_datum and da_loc_datum tables. Once NET-46 is deployed, it will be impossible to query these legacy tables as well, so they can be dropped to free up quite a bit of space in the database.