Cedar Fair isn't a Larson fan - it's more likely ALL of them are being removed than any being relocated.
As for the possible relocation of Green Lantern that'd be anyone's guess on if it's going to happen. Legacy Six Flags relocated 3 B&Ms INCLUDING that one so that's something I could have easily seen happening if they were calling the shots. But I also don't think Kingda Ka would be closing if they were in charge still. This is Cedar Fair so I really don't know if they'd have the appetite for a relocation.