It is impossible to answer this question definitively without knowing which season of Khatron Ke Khiladi you are referring to. Each season features different contestants, and the elimination process varies.
To get a precise answer, please specify the season you are interested in.
For example, you could ask: "Who has left Khatron Ke Khiladi season 15?"
Once you provide the season, I can give you a list of the contestants who have been eliminated.