finagle: remove unused deps in sbt build
finagle: remove unused deps in sbt build

Problem

The SBT build file has unused/transitive deps.

Solution

Fix up the dependencies.

RB_ID=858458

twitter/finagle,twitter/finagle,koshelev/finagle,BuoyantIO/finagle,koshelev/finagle,BuoyantIO/finagle,spockz/finagle,luciferous/finagle,BuoyantIO/finagle,luciferous/finagle,mkhq/finagle,twitter/finagle,mkhq/finagle,luciferous/finagle,twitter/finagle,luciferous/finagle,adriancole/finagle,luciferous/finagle,adriancole/finagle,adriancole/finagle,spockz/finagle,mkhq/finagle,spockz/finagle,BuoyantIO/finagle,spockz/finagle,koshelev/finagle,spockz/finagle,adriancole/finagle,luciferous/finagle,mkhq/finagle,BuoyantIO/finagle,koshelev/finagle,spockz/finagle,mkhq/finagle,koshelev/finagle,BuoyantIO/finagle,adriancole/finagle,twitter/finagle,koshelev/finagle,adriancole/finagle,mkhq/finagle