[andrewSC]

Find out who the author was via git blame and ask what they were thinking when writing it. Or in the case that the person who wrote it left, contact someone with some knowledge of the line in question (i.e. the person who either also wrote the majority of the code or is at least familiar with what it does) and ask. If it comes down to it and you're the only one qualified to do something about it, then just remove the line (assuming the code is functioning properly) just how I would approach it.