Remove unused UnsetState

x/evm/keeper/statedb.go

@@ -284,37 +284,6 @@ func (k *Keeper) SetState(ctx sdk.Context, addr common.Address, key, value commo
 	)
 }
 
-/*
-func (k *Keeper) UnsetState(ctx sdk.Context, addr common.Address, key common.Hash) error {
-	ctxStore := ctx.KVStore(k.storeKey)
-	gasKVStore, ok := ctxStore.(*gaskv.Store)
-	if !ok {
-		return fmt.Errorf("expected gaskv.Store, got %T", ctxStore)
-	}
-
-	// Use parent of store and try as cachekv.Store
-	ctxStore = gasKVStore.GetParent()
-
-	cacheKVStore, ok := ctxStore.(*cachekv.Store)
-	if !ok {
-		return fmt.Errorf("expected cachekv.Store, got %T", ctxStore)
-	}
-
-	storeKey := types.AddressStoragePrefix(addr)
-	storeKey = append(storeKey, key.Bytes()...)
-
-	cacheKVStore.Unset(storeKey)
-
-	k.Logger(ctx).Debug(
-		"state unset",
-		"ethereum-address", addr.Hex(),
-		"key", key.Hex(),
-	)
-
-	return nil
-}
-*/
-
 // SetCode set contract code, delete if code is empty.
 func (k *Keeper) SetCode(ctx sdk.Context, codeHash, code []byte) {
 	store := prefix.NewStore(ctx.KVStore(k.storeKey), types.KeyPrefixCode)