I think thrower is probably the most obvious "bad" class though it got removed from 1.4
though mechanically it wasn't necessarily weak or anything it just lacked content so you'd spend so long in progression using items from way before which are way weaker
once you hit hardmode you'd pretty much run out of items to begin with because so many weapons you'd think were thrower were melee, or ranged, or even magic

e.g the magic throwing dagger which functionally was a infinite throwing dagger was actually a magic weapon instead, and the shadowflame throwing knife is melee if I recall correctly despite being also being almost identical to a throwing class weapon while boomerangs and other throwables are also melee

this class overlap (at what point does a melee weapon become a magic or ranged one?) is an issue for other classes later into progression as well but they have more than enough content to make up for it, while thrower was always in a drought content wise
I think one of the only throwing weapons that were in hardmode were like poison/ichor throwing knives unless they aren't even hardmode lol