Bump version number
If running as a live USB with a flash drive partition named 'pydaw_data', use
that for the pydaw3 profile folder instead of ~/pydaw3 .  This is cheap and
cheerful persistence when running a live USB...

My first attempt was to move the entire home folder there, but it seems that
isn't really such a good idea, especially since it's bound to cause problems
when PyDAW-OS moves to a new version of Ubuntu.

This won't currently persist soundcard settings, BUT, when I finally merge
my ALSA back-end (there is a working one on another branch, but it isn't
finished), then it will also persist soundcard settings whenver possible...
Delete obsolete file.