diff --git a/ledger/src/blocktree/db.rs b/ledger/src/blocktree/db.rs
index 987506c69..6c69ccbcb 100644
--- a/ledger/src/blocktree/db.rs
+++ b/ledger/src/blocktree/db.rs
@@ -71,7 +71,7 @@ pub mod columns {
 }
 
 #[derive(Debug)]
-pub struct Rocks(rocksdb::DB);
+struct Rocks(rocksdb::DB);
 
 impl Rocks {
     fn open(path: &Path) -> Result<Rocks> {
@@ -212,11 +212,6 @@ pub trait Column {
     fn as_index(slot: Slot) -> Self::Index;
 }
 
-pub trait IWriteBatch {
-    fn put_cf(&mut self, cf: ColumnFamily, key: &[u8], value: &[u8]) -> Result<()>;
-    fn delete_cf(&mut self, cf: ColumnFamily, key: &[u8]) -> Result<()>;
-}
-
 pub trait TypedColumn: Column {
     type Type: Serialize + DeserializeOwned;
 }
@@ -742,18 +737,6 @@ impl WriteBatch {
     }
 }
 
-impl IWriteBatch for RWriteBatch {
-    fn put_cf(&mut self, cf: ColumnFamily, key: &[u8], value: &[u8]) -> Result<()> {
-        RWriteBatch::put_cf(self, cf, key, value)?;
-        Ok(())
-    }
-
-    fn delete_cf(&mut self, cf: ColumnFamily, key: &[u8]) -> Result<()> {
-        RWriteBatch::delete_cf(self, cf, key)?;
-        Ok(())
-    }
-}
-
 impl std::convert::From<rocksdb::Error> for BlocktreeError {
     fn from(e: rocksdb::Error) -> BlocktreeError {
         BlocktreeError::RocksDb(e)