chore(core): revert []*ethapi.RPCTransaction changes in miner (#394)

This reverts commit afd09af.

Author: davidtaikocha

miner/taiko_miner.go

@@ -6,13 +6,12 @@ import (
 	"github.com/ethereum/go-ethereum/beacon/engine"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/internal/ethapi"
 )
 
 // PreBuiltTxList is a pre-built transaction list based on the latest chain state,
 // with estimated gas used / bytes.
 type PreBuiltTxList struct {
-	TxList           []*ethapi.RPCTransaction
+	TxList           types.Transactions
 	EstimatedGasUsed uint64
 	BytesLength      uint64
 }

miner/taiko_worker.go

@@ -15,7 +15,6 @@ import (
 	"github.com/ethereum/go-ethereum/core/txpool"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/core/vm"
-	"github.com/ethereum/go-ethereum/internal/ethapi"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rlp"
@@ -94,7 +93,7 @@ func (w *Miner) buildTransactionsLists(
 		}
 
 		return lastTransaction, &PreBuiltTxList{
-			TxList:           w.toRPCTransactions(env.txs),
+			TxList:           env.txs,
 			EstimatedGasUsed: env.header.GasLimit - env.gasPool.Gas(),
 			BytesLength:      uint64(len(b)),
 		}, nil
@@ -339,15 +338,6 @@ loop:
 	return lastTransaction
 }
 
-// toRPCTransactions converts the given transactions to RPC transactions.
-func (w *Miner) toRPCTransactions(txs types.Transactions) []*ethapi.RPCTransaction {
-	var rpcTxs []*ethapi.RPCTransaction
-	for _, tx := range txs {
-		rpcTxs = append(rpcTxs, ethapi.NewRPCPendingTransaction(tx, nil, w.chainConfig))
-	}
-	return rpcTxs
-}
-
 // encodeAndCompressTxList encodes and compresses the given transactions list.
 func encodeAndCompressTxList(txs types.Transactions) ([]byte, error) {
 	b, err := rlp.EncodeToBytes(txs)