remove the slice pool management

pkg/obichunk/chunks.go

@@ -49,7 +49,6 @@ func ISequenceChunk(iterator obiiter.IBioSequence,
 					b := data.Get()
 					source = b.Source()
 					*chunk = append(*chunk, b.Slice()...)
-					b.Recycle(false)
 				}
 
 				lock.Lock()

pkg/obichunk/subchunks.go

@@ -107,8 +107,6 @@ func ISequenceSubChunk(iterator obiiter.IBioSequence,
 					batch.Slice()[i] = nil
 				}
 
-				batch.Recycle(false)
-
 				_By(func(p1, p2 *sSS) bool {
 					return p1.code < p2.code
 				}).Sort(ordered)

pkg/obichunk/unique.go

@@ -95,10 +95,7 @@ func IUniqueSequence(iterator obiiter.IBioSequence,
 
 			if icat < 0 || len(batch.Slice()) == 1 {
 				// No more sub classification of sequence or only a single sequence
-				if opts.NoSingleton() && len(batch.Slice()) == 1 && batch.Slice()[0].Count() == 1 {
-					// We remove singleton from output
-					batch.Recycle(true)
-				} else {
+				if !(opts.NoSingleton() && len(batch.Slice()) == 1 && batch.Slice()[0].Count() == 1) {
 					iUnique.Push(batch.Reorder(nextOrder()))
 				}
 			} else {