How to remove underline from thread titles in listing?

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Search didn't turn up anything except a couple major mods.

I just want to remove the underlining from thread titles on the forum view and search view. I'm guessing it is a modification in the threadbit template. I tried adding "style="text-decoration:none"" or whatever (it was correct syntax, not sure if that just was) in there in what I thought might be the proper spot and it did remove the underlines from the bold new posts. However, it didn't remove them from the viewed posts that were normal weight. Also, it disabled my ability to double-click-quickedit the thread titles in the listing.

So, how do I do this?

Thanks.