Consolidate RecallAdjuster code

[shaycrk]

The RecallAdjuster code has diverged a little bit across some of the projects here and we should consolidate it to ensure we have one canonical version that meets all of our use cases (for instance, in the San Jose setting, we had to modify it to deal with missing labels, while elsewhere we modified it to ensure there were no duplicates after triage started allowing multiple models with different random seeds). Currently, there is a separate version in each project folder, but we should merge these into a single version of the code at a higher level in the repo.