Remove flotsam files, logging, and code cleanup

[Seismal]

The code base is fairly old and has been ported a couple of times. There is a lot of unnecessary code and logging in it. Consider removing GP2x specific code, various test modes, and logging. If these are desired, the code should be examined before putting into production.

Consider changing names of drawing variables from their old use like hw_overlays to some kind of buffers, as they are today.