After some time has passed, clean up HVAC component dictionaries

[chriswmackey]

Right now, the three template HVAC components contain dictionaries with a lot of extra keys that were meant to help deal with a couple breaking changes that we made in honeybee-schema. The extra dictionaries include the hvac_dict and the vintages dictionary. In another two stable releases after we aren't so concerned about people using the old dropdown list of the HVAC enumerations, we should just simplify the code in these components. We can probably get rid of the hvac_dict and reduce the keys in the vintages dictionary.