No, there is no way to do this. Why would you need to do this? Once you parse the JSON data in your application its very easy to just ignore any values that you don't need. The APIs support using gzip compression so you don't have to worry about the response size either. If you're really optimizing for speed you might consider switching to the Search API which looks like this:
https://www.googleapis.com/freebase/v1/search?filter=(all+type:/people/person)