diff --git a/core/txpool/blobpool/blobpool.go b/core/txpool/blobpool/blobpool.go
index 5b539cc9ee..adc1ac711d 100644
--- a/core/txpool/blobpool/blobpool.go
+++ b/core/txpool/blobpool/blobpool.go
@@ -1397,33 +1397,6 @@ func (p *BlobPool) AvailableBlobs(vhashes []common.Hash) int {
 	return available
 }
 
-// convertSidecar converts the legacy sidecar in the submitted transactions
-// if Osaka fork has been activated.
-func (p *BlobPool) convertSidecar(txs []*types.Transaction) ([]*types.Transaction, []error) {
-	head := p.chain.CurrentBlock()
-	if !p.chain.Config().IsOsaka(head.Number, head.Time) {
-		return txs, make([]error, len(txs))
-	}
-	var errs []error
-	for _, tx := range txs {
-		// Validate the transaction at first to avoid unnecessary conversion.
-		if err := p.validateTx(tx); err != nil {
-			errs = append(errs, err)
-			continue
-		}
-
-		sidecar := tx.BlobTxSidecar()
-		if sidecar.Version == types.BlobSidecarVersion0 {
-			if err := sidecar.ToV1(); err != nil {
-				errs = append(errs, err)
-				continue
-			}
-		}
-		errs = append(errs, nil)
-	}
-	return txs, errs
-}
-
 // Add inserts a set of blob transactions into the pool if they pass validation (both
 // consensus validity and pool restrictions).
 //