MPs represent people and we don't need then this time: we represented ourselves.
Because we voted on June 23 that's the end of the whole affair?
Who is going to do the thinking, the negotiation, the planning, the legalities of actually carrying out Brexit? And who is going to check that the thinking, negotiation, planning and legalities are being done correctly, if not our representatives?
Unless... perhaps you mean that we The People should once again dispense with our unnecessary representatives, and carry out the checks ourselves... perhaps by putting it to a vote
?