hide ds backend indices as any other hidden indices

TODO.md

@@ -6,4 +6,3 @@
 - add datastream support:
   https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-indices-get-data-stream
   
-  also exclude data stream backing indices from index ls

pkg/es/index.go

@@ -62,11 +62,6 @@ func filterIndices(conf *cfg.Config, list indices.Response) indices.Response {
 	}
 
 	return mapmap.NewSlicer(list).MapSliceValuesImmutable(func(index types.IndicesRecord) bool {
-		if strings.HasPrefix(*index.Index, ".ds-") {
-			// ignore data stream backing indicies
-			return false
-		}
-
 		if !conf.Partials && strings.HasPrefix(*index.Index, "partial-") {
 			return false
 		}