diff --git a/core/state/database.go b/core/state/database.go
index 365a28d900..8ae2c52546 100644
--- a/core/state/database.go
+++ b/core/state/database.go
@@ -20,7 +20,6 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/crate-crypto/go-ipa/banderwagon"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/lru"
 	"github.com/ethereum/go-ethereum/core/rawdb"
@@ -39,12 +38,6 @@ const (
 
 	// Cache size granted for caching clean code.
 	codeCacheSize = 64 * 1024 * 1024
-
-	// commitmentSize is the size of commitment stored in cache.
-	commitmentSize = banderwagon.UncompressedSize
-
-	// Cache item granted for caching commitment results.
-	commitmentCacheItems = 64 * 1024 * 1024 / (commitmentSize + common.AddressLength)
 )
 
 // Database wraps access to tries and contract code.