Minor cleanup. (#610)

- Remove unused compactor type.
- Add comment to WithDecoderConcurrency explaining what a negative value does.

Author: ggreer

pkg/dotc1z/decoder.go

@@ -107,6 +107,7 @@ func WithDecoderMaxDecodedSize(n uint64) DecoderOption {
 // WithDecoderConcurrency sets the number of created decoders.
 // Default is 1, which disables async decoding/concurrency.
 // 0 uses GOMAXPROCS.
+// -1 uses GOMAXPROCS or 4, whichever is lower.
 func WithDecoderConcurrency(n int) DecoderOption {
 	return func(o *decoderOptions) error {
 		o.decoderConcurrency = n

pkg/synccompactor/compactor.go

@@ -26,7 +26,6 @@ var tracer = otel.Tracer("baton-sdk/pkg.synccompactor")
 type CompactorType string
 
 const (
-	CompactorTypeNaive    CompactorType = "naive"
 	CompactorTypeAttached CompactorType = "attached"
 )