Remove dead and debugging code instead of commenting it out

Can we just remove code that's dead or only used for debugging instead of commenting it out? It'll still be there in Git if you need to get to it for some reason. But, it makes the code harder to read and understand. I believe this helps explain the bug at #1095014-2: Remember node context without <dme:context> tags., where set_node() is only called in commented-out code blocks.