Portions of dir-spec unimplemented

As observed by Karsten in ticket #3038 the /tor/micro/all[.z] and /tor/status-vote/(current|next)/consensus-index[.z] dirport methods presently are not implemented.

I'm a little surprised that we don't have a tracking ticket for their implementation. Considering that Karsten discovered these were missing over a year ago I think it's safe to assume we should drop them from the spec. No information is better than information for something that's unlikely to ever exist. :)

[ note: I only checked that '/tor/micro/all' is presently unimplemented, I didn't double check the other ]