diff --git a/consensus/src/commons.rs b/consensus/src/commons.rs
index efeb48e831..558d5aa63e 100644
--- a/consensus/src/commons.rs
+++ b/consensus/src/commons.rs
@@ -139,7 +139,6 @@ impl From<BlsSigError> for ConsensusError {
 #[async_trait::async_trait]
 pub trait Database: Send + Sync {
     fn store_candidate_block(&mut self, b: Block);
-    fn delete_candidate_blocks(&mut self);
 }
 
 #[derive(Clone)]