Neither of them are needed. If somebody has a question on code issues, go to Stackoverflow.
I say kill them, but what do you think? Are they useful?
We really don't have a great way to deal with our crappy meta tags; even though software-development needs to die, I'm tempted to just merge code and coding into it, as—in practice—it's come to mean exactly the same thing (i.e., nothing). This way we'd be dealing with two less tags.
But in the end, we're going to need to clean it up, just like we've perpetually been doing with the career and jobs tags.