Remove JSON-LIB from codebase?

[Louis Ryan]

We currently have two JSON bindings in the Java Shindig codebase. The
JSON-lib one isnt used (?) and adds a significant amount of code. I believe
that it is faster than the JSON.org implementation but I dont know if we
have a critical performance need here yet. Id be in favor of removing it, we
can always add back later. Thoughts?