Sonification: clean up style

This was done with Eclipse's "clean up" command, using the ImageJ code
style template.
Remove superfluous Demo code

This code is: A) already present in the JCollider library; and
B) unused by the Sonification class.
Sonification: remove commented out code

This code serves to distract from the flow of actually active code.
You can always get old code back from Git by resurrecting an old commit.
Sonification: fix raw type warnings

We now use List<SynthDef> where appropriate rather than raw Lists.
POM: do not override managed version
Sonification: remove unused code
Sonification: fix Eclipse warnings