message: remove Zero gate from vector of gate types
diff: @@ -329,7 +329,7 @@ fn circuit_gate_selector_index(typ: GateType) -> usize {
  /// Get vector of foreign field multiplication circuit gate types
  pub fn circuit_gates() -> Vec<GateType> {
  - vec![GateType::ForeignFieldMul, GateType::Zero]
  + vec![GateType::ForeignFieldMul]
  }
  /// Get combined constraints for a given foreign field multiplication circuit gate
  