I think having
relevance there is totally irrelevant. (example)
Am curious how it's determined too.
I'd disagree with removing it
It's used in other searches, and ideally the search result interface should stay uniform regardless of what your search keywords are
Making an except for specific search terms can just lead to a maintenance nightmare later on down the road.
I am also curious about how items in that tab are determined though. I was testing with searching the "async" tag on my own profile since I know there are few questions tagged with it, but I can't find a pattern :)