Clear Google Maps search history without removing the cached maps?

I've been using the Google Maps app to cache the maps on certain places where I might be going in the future. I don't always have internet access which is why I'm doing this. Now that I've cached most of the places I might possibly go to, I want to clear my search history to remove the clutter. I don't want to clear the whole shebang. Otherwise, my "pre-caching" actions would just be wasted efforts. I just want the search history on Google Maps to be cleared. How do I do this?