Clean up dead code

[armcknight]

There are various commented lines of code, or functions that are not called from anywhere. Remove them; they will still be available in git history, but in cases like this, it's almost always YAGNI... and we can always rebuild whatever solutions you need.

I'm also looking for a list of things from ListViewController that you actually use as part of your sales demo, so we can remove the rest that are technically not dead code since they're connected to the buttons in the UI.