zk: Fix module.

src/zk/circuit/mod.rs

@@ -1,14 +1,8 @@
 pub mod burn_contract;
 pub use burn_contract::BurnContract;
 
-
-pub mod spend_contract;
-pub mod lead_contract;
-
-
-
 pub mod mint_contract;
 pub use mint_contract::MintContract;
 
-pub use spend_contract::SpendContract;
+pub mod lead_contract;
 pub use lead_contract::LeadContract;