Cleaning out deprecated hooks into FATES (ED).

[rgknox]

In this change-set, like the title implies, the old and obsolete ED code was removed.
Likewise, the various interface connection points were also cleaned.

[BFB]

[rgknox]

Some specifics:

1. In surface radiation calculations, there was code nested two calls away from clm_drv where sun-shade fractions are calculated in different ways depending on if FATES is turned on or off, this portion of the code was split off and two completely different subroutines are called for fates and non-fates runs.
2. the land model will use a patch/pft level data structure called "itype", this indicates what kind of land-cover is represented by the patch. FATES assumes that different plants co-exist inside patches, and thus the use of itype is incompatible with fates. Instances where itype is used in alm code need to be filtered for non-fates patches.

There may be a few more things to be cleaned out or prepped before FATES is integrated into ALM fully, but this changeset accomplishes the bulk of the "cleaning out the old", so seemed like a good cut off point.

Developers note: This is my first PR with the ACME team, so apologies if my protocol is lacking, I will do my best to learn your system. I do note that my commit messages are pretty lackluster. I will improve on these in the commits to come!