90ee0cb3f2
We had lots of hard-coded logic to do slightly different things depending on which version of a particular field was present in a schema. For every field that has now been completely removed, we can remove references including these bits of extra logic. The difference is especially striking in the sortkey query path. Note that queries containing sortkeys have already been failing since servers upgraded to schema version 8 (2.9), which no longer uses this field. Change-Id: Ib1fbc9f3aa45bf068b7869ca3aada40dbe4cb1bb