op-chain-ops: no longer embed receipts

The functionality was added to create a bunch of receipts
as part of the bedrock transition so make the sdk and
withdrawal workflows "just work". We are going to instead
implement logic into the sdk instead of having the extra
receipts. The extra receipts would throw off data people.
It would look like withdrawals happened twice.

op-chain-ops/genesis/db_migration.go

@@ -122,12 +122,7 @@ func MigrateDB(ldb ethdb.Database, config *DeployConfig, l1Block *types.Block, m
 		BaseFee:     (*big.Int)(config.L2GenesisBlockBaseFeePerGas),
 	}
 
-	receipts, err := CreateReceipts(bedrockHeader, withdrawals, &config.L1CrossDomainMessengerProxy)
-	if err != nil {
-		return nil, err
-	}
-
-	bedrockBlock := types.NewBlock(bedrockHeader, nil, nil, receipts, trie.NewStackTrie(nil))
+	bedrockBlock := types.NewBlock(bedrockHeader, nil, nil, nil, trie.NewStackTrie(nil))
 
 	res := &MigrationResult{
 		TransitionHeight:    bedrockBlock.NumberU64(),
@@ -142,7 +137,7 @@ func MigrateDB(ldb ethdb.Database, config *DeployConfig, l1Block *types.Block, m
 
 	rawdb.WriteTd(ldb, bedrockBlock.Hash(), bedrockBlock.NumberU64(), bedrockBlock.Difficulty())
 	rawdb.WriteBlock(ldb, bedrockBlock)
-	rawdb.WriteReceipts(ldb, bedrockBlock.Hash(), bedrockBlock.NumberU64(), receipts)
+	rawdb.WriteReceipts(ldb, bedrockBlock.Hash(), bedrockBlock.NumberU64(), nil)
 	rawdb.WriteCanonicalHash(ldb, bedrockBlock.Hash(), bedrockBlock.NumberU64())
 	rawdb.WriteHeadBlockHash(ldb, bedrockBlock.Hash())
 	rawdb.WriteHeadFastBlockHash(ldb, bedrockBlock.Hash())

op-chain-ops/genesis/receipts.go

-package genesis
-
-import (
-	"github.com/ethereum-optimism/optimism/op-chain-ops/crossdomain"
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/core/types"
-)
-
-// CreateReceipts will create the set of bedrock genesis receipts given
-// a list of legacy withdrawals.
-func CreateReceipts(hdr *types.Header, withdrawals []*crossdomain.LegacyWithdrawal, l1CrossDomainMessenger *common.Address) ([]*types.Receipt, error) {
-	receipts := make([]*types.Receipt, 0)
-
-	for i, withdrawal := range withdrawals {
-		wd, err := crossdomain.MigrateWithdrawal(withdrawal, l1CrossDomainMessenger)
-		if err != nil {
-			return nil, err
-		}
-
-		receipt, err := wd.Receipt(hdr, uint(i))
-		if err != nil {
-			return nil, err
-		}
-
-		receipts = append(receipts, receipt)
-	}
-
-	return receipts, nil
-}