diff --git a/core/vm/instructions_arbitrum.go b/core/vm/instructions_arbitrum.go
deleted file mode 100644
index f8927b3c80..0000000000
--- a/core/vm/instructions_arbitrum.go
+++ /dev/null
@@ -1,50 +0,0 @@
-// Copyright 2020 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package vm
-
-import (
-	"math/big"
-
-	"github.com/ethereum/go-ethereum/common"
-)
-
-// adaptation of opBlockHash that doesn't require an EVM stack
-func BlockHashOp(evm *EVM, block *big.Int) common.Hash {
-	if !block.IsUint64() {
-		return common.Hash{}
-	}
-	num64 := block.Uint64()
-	upper, err := evm.ProcessingHook.L1BlockNumber(evm.Context)
-	if err != nil {
-		return common.Hash{}
-	}
-
-	var lower uint64
-	if upper < 257 {
-		lower = 0
-	} else {
-		lower = upper - 256
-	}
-	if num64 >= lower && num64 < upper {
-		hash, err := evm.ProcessingHook.L1BlockHash(evm.Context, num64)
-		if err != nil {
-			return common.Hash{}
-		}
-		return hash
-	}
-	return common.Hash{}
-}