remove unused function

prometheus/matcher.go

@@ -26,28 +26,6 @@ var promqlMatchMap = map[labels.MatchType]finder.TaggedTermOp{
 	labels.MatchNotRegexp: finder.TaggedTermNotMatch,
 }
 
-func makeTaggedFromPromPB(matchers []*prompb.LabelMatcher) ([]finder.TaggedTerm, error) {
-	terms := make([]finder.TaggedTerm, 0, len(matchers))
-	for i := 0; i < len(matchers); i++ {
-		if matchers[i] == nil {
-			continue
-		}
-		op, ok := prompbMatchMap[matchers[i].Type]
-		if !ok {
-			return nil, fmt.Errorf("unknown matcher type %#v", matchers[i].GetType())
-		}
-		terms = append(terms, finder.TaggedTerm{
-			Key:   matchers[i].Name,
-			Value: matchers[i].Value,
-			Op:    op,
-		})
-	}
-
-	sort.Sort(finder.TaggedTermList(terms))
-
-	return terms, nil
-}
-
 func makeTaggedFromPromQL(matchers []*labels.Matcher) ([]finder.TaggedTerm, error) {
 	terms := make([]finder.TaggedTerm, 0, len(matchers))
 	for i := 0; i < len(matchers); i++ {