message: [lookup] remove unreachable code
diff: @@ -609,29 +609,7 @@ where
  commitments.push(&lindex.lookup_selectors[*i]);
  }
  },
  - LookupTable => match index.lookup_index.as_ref() {
  - None => {
  - panic!("Attempted to use {:?}, but no lookup index was given", col)
  - }
  - Some(lindex) => {
  - let joint_combiner =
  - constants.joint_combiner.expect("missing joint combiner");
  - let mut j = ScalarField::<G>::one();
  - scalars.push(scalar);
  - commitments.push(&lindex.lookup_table[0]);
  - for t in lindex.lookup_table.iter().skip(1) {
  - j *= joint_combiner;
  - scalars.push(scalar * j);
  - commitments.push(t);
  - }
  - if let Some(table_ids) = lindex.table_ids.as_ref() {
  - scalars.push(
  - scalar * joint_combiner.pow([lindex.max_joint_size as u64]),
  - );
  - commitments.push(table_ids);
  - }
  - }
  - },
  + LookupTable => panic!("Lookup table is unused in the linearization"),
  Index(t) => {
  use GateType::*;
  let c = match t {
  