message: remove lookup gate
diff: @@ -351,7 +351,6 @@ impl<F: FftField> CircuitGate<F> {
  Double => self.verify_double(witness),
  Vbmul => self.verify_vbmul(witness),
  Endomul => self.verify_endomul(witness, cs),
  - Lookup => self.verify_lookup(witness),
  ChaCha0 | ChaCha1 | ChaCha2 | ChaChaFinal => panic!("todo")
  }
  }
  