Can’t get to Konrad’s hold or the slaughter star 3000 did they remove them from the game?
Nope. They are still there. (And you need both for the locations achievements, so it really wouldn’t make sense to remove them).
Slaughter Star should be available through the bridge navigation if you’ve already received notification of the mission from Torgue.
Konrad’s Hold you can get to from the adjoining map if you’re missing the FT location.