diff --git a/tests/gen_sttransaction.go b/tests/gen_sttransaction.go
deleted file mode 100644
index 9b5aecbfe6..0000000000
--- a/tests/gen_sttransaction.go
+++ /dev/null
@@ -1,120 +0,0 @@
-// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
-
-package tests
-
-import (
-	"encoding/json"
-	"math/big"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/common/hexutil"
-	"github.com/ethereum/go-ethereum/common/math"
-	"github.com/ethereum/go-ethereum/core/types"
-)
-
-var _ = (*stTransactionMarshaling)(nil)
-
-// MarshalJSON marshals as JSON.
-func (s stTransaction) MarshalJSON() ([]byte, error) {
-	type stTransaction struct {
-		GasPrice             *math.HexOrDecimal256 `json:"gasPrice"`
-		MaxFeePerGas         *math.HexOrDecimal256 `json:"maxFeePerGas"`
-		MaxPriorityFeePerGas *math.HexOrDecimal256 `json:"maxPriorityFeePerGas"`
-		Nonce                math.HexOrDecimal64   `json:"nonce"`
-		To                   string                `json:"to"`
-		Data                 []string              `json:"data"`
-		AccessLists          []*types.AccessList   `json:"accessLists,omitempty"`
-		GasLimit             []math.HexOrDecimal64 `json:"gasLimit"`
-		Value                []string              `json:"value"`
-		PrivateKey           hexutil.Bytes         `json:"secretKey"`
-		Sender               *common.Address       `json:"sender"`
-		BlobVersionedHashes  []common.Hash         `json:"blobVersionedHashes,omitempty"`
-		BlobGasFeeCap        *math.HexOrDecimal256 `json:"maxFeePerBlobGas,omitempty"`
-	}
-	var enc stTransaction
-	enc.GasPrice = (*math.HexOrDecimal256)(s.GasPrice)
-	enc.MaxFeePerGas = (*math.HexOrDecimal256)(s.MaxFeePerGas)
-	enc.MaxPriorityFeePerGas = (*math.HexOrDecimal256)(s.MaxPriorityFeePerGas)
-	enc.Nonce = math.HexOrDecimal64(s.Nonce)
-	enc.To = s.To
-	enc.Data = s.Data
-	enc.AccessLists = s.AccessLists
-	if s.GasLimit != nil {
-		enc.GasLimit = make([]math.HexOrDecimal64, len(s.GasLimit))
-		for k, v := range s.GasLimit {
-			enc.GasLimit[k] = math.HexOrDecimal64(v)
-		}
-	}
-	enc.Value = s.Value
-	enc.PrivateKey = s.PrivateKey
-	enc.Sender = s.Sender
-	enc.BlobVersionedHashes = s.BlobVersionedHashes
-	enc.BlobGasFeeCap = (*math.HexOrDecimal256)(s.BlobGasFeeCap)
-	return json.Marshal(&enc)
-}
-
-// UnmarshalJSON unmarshals from JSON.
-func (s *stTransaction) UnmarshalJSON(input []byte) error {
-	type stTransaction struct {
-		GasPrice             *math.HexOrDecimal256 `json:"gasPrice"`
-		MaxFeePerGas         *math.HexOrDecimal256 `json:"maxFeePerGas"`
-		MaxPriorityFeePerGas *math.HexOrDecimal256 `json:"maxPriorityFeePerGas"`
-		Nonce                *math.HexOrDecimal64  `json:"nonce"`
-		To                   *string               `json:"to"`
-		Data                 []string              `json:"data"`
-		AccessLists          []*types.AccessList   `json:"accessLists,omitempty"`
-		GasLimit             []math.HexOrDecimal64 `json:"gasLimit"`
-		Value                []string              `json:"value"`
-		PrivateKey           *hexutil.Bytes        `json:"secretKey"`
-		Sender               *common.Address       `json:"sender"`
-		BlobVersionedHashes  []common.Hash         `json:"blobVersionedHashes,omitempty"`
-		BlobGasFeeCap        *math.HexOrDecimal256 `json:"maxFeePerBlobGas,omitempty"`
-	}
-	var dec stTransaction
-	if err := json.Unmarshal(input, &dec); err != nil {
-		return err
-	}
-	if dec.GasPrice != nil {
-		s.GasPrice = (*big.Int)(dec.GasPrice)
-	}
-	if dec.MaxFeePerGas != nil {
-		s.MaxFeePerGas = (*big.Int)(dec.MaxFeePerGas)
-	}
-	if dec.MaxPriorityFeePerGas != nil {
-		s.MaxPriorityFeePerGas = (*big.Int)(dec.MaxPriorityFeePerGas)
-	}
-	if dec.Nonce != nil {
-		s.Nonce = uint64(*dec.Nonce)
-	}
-	if dec.To != nil {
-		s.To = *dec.To
-	}
-	if dec.Data != nil {
-		s.Data = dec.Data
-	}
-	if dec.AccessLists != nil {
-		s.AccessLists = dec.AccessLists
-	}
-	if dec.GasLimit != nil {
-		s.GasLimit = make([]uint64, len(dec.GasLimit))
-		for k, v := range dec.GasLimit {
-			s.GasLimit[k] = uint64(v)
-		}
-	}
-	if dec.Value != nil {
-		s.Value = dec.Value
-	}
-	if dec.PrivateKey != nil {
-		s.PrivateKey = *dec.PrivateKey
-	}
-	if dec.Sender != nil {
-		s.Sender = dec.Sender
-	}
-	if dec.BlobVersionedHashes != nil {
-		s.BlobVersionedHashes = dec.BlobVersionedHashes
-	}
-	if dec.BlobGasFeeCap != nil {
-		s.BlobGasFeeCap = (*big.Int)(dec.BlobGasFeeCap)
-	}
-	return nil
-}