dao/test: comment out export_witness_json() call

src/contract/dao/src/client/exec.rs

@@ -27,7 +27,7 @@ use rand::rngs::OsRng;
 
 use darkfi::{
     zk::{Proof, ProvingKey, Witness, ZkCircuit},
-    zkas::{util::export_witness_json, ZkBinary},
+    zkas::ZkBinary,
     Result,
 };
 
@@ -177,7 +177,7 @@ impl DaoExecCall {
             user_data,
             input_user_data_enc,
         ];
-        export_witness_json("witness.json", &prover_witnesses, &public_inputs);
+        //export_witness_json("witness.json", &prover_witnesses, &public_inputs);
 
         let circuit = ZkCircuit::new(prover_witnesses, exec_zkbin);
         let input_proof = Proof::create(exec_pk, &[circuit], &public_inputs, &mut OsRng)