message: remove aligned chunk option
diff: @@ -111,7 +111,6 @@ func (p *Packer) Pack(_ context.Context, req PackRequest) (PackResult, error) {
  WhiteoutSpec: "overlayfs",
  OutputJSONPath: p.outputJsonPath(),
  BlobPath: p.blobFilePath(blobFileName(req.Meta)),
  - AlignedChunk: true,
  }); err != nil {
  return PackResult{}, errors.Wrapf(err, "failed to Pack targetDir %s", req.TargetDir)
  }
  