Remove unneeded TODO comment (#1991)
Remove unneeded TODO comment (#1991)

This question was added in a34b22932 on 2017-06-28 and is no longer
relevant. The code has already been released, any breakage has long
since occurred.

Co-authored-by: Alexandre Wilhelm <4e8f81ef909fa97e7b2aa9e5e3be2fbedb56de20@uber.com>
yarpc/yarpc-go,yarpc/yarpc-go