These are the worst ones, either that I most dislike or have developed
past a long time ago or otherwise are outdated or causing more harm than
good.
I recognise that what has putten online cannot be removed from there
permanently, but I have previously hidden material from view and haven't
received any feedback on it, so I think I can continue removing things.
The plan is first this commit and next time I happen to be going through
things, I can probably start saying git rm.
