hurray we get to remove some code! This looks great, thanks Martin.
Since you've submitted a number of merged pull requests by now, I've granted you write access to the repo. Go ahead and push these smaller/medium sized fixes yourself to the py3.3 branch yourself, I'll continue reviewing as they come by.
If you're going to work on a larger/significant feature that requires some time and or multiple commits, or might potentially break the mainline py3.3 or whatever branch, we'll usually do that work on a separate branch. That way others like me will have a chance to review the work as it progresses