Update dependencies

vendor/github.com/cockroachdb/pebble/internal/keyspan/transformer.go

@@ -48,102 +48,3 @@ func VisibleTransform(snapshot uint64) Transformer {
 		return nil
 	})
 }
-
-// TransformerIter is a FragmentIterator that applies a Transformer on all
-// returned keys. Used for when a caller needs to apply a transformer on an
-// iterator but does not otherwise need the mergingiter's merging ability.
-type TransformerIter struct {
-	FragmentIterator
-
-	// Transformer is applied on every Span returned by this iterator.
-	Transformer Transformer
-	// Comparer in use for this keyspace.
-	Compare base.Compare
-
-	span Span
-	err  error
-}
-
-func (t *TransformerIter) applyTransform(span *Span) *Span {
-	t.span = Span{
-		Start: t.span.Start[:0],
-		End:   t.span.End[:0],
-		Keys:  t.span.Keys[:0],
-	}
-	if err := t.Transformer.Transform(t.Compare, *span, &t.span); err != nil {
-		t.err = err
-		return nil
-	}
-	return &t.span
-}
-
-// SeekGE implements the FragmentIterator interface.
-func (t *TransformerIter) SeekGE(key []byte) *Span {
-	span := t.FragmentIterator.SeekGE(key)
-	if span == nil {
-		return nil
-	}
-	return t.applyTransform(span)
-}
-
-// SeekLT implements the FragmentIterator interface.
-func (t *TransformerIter) SeekLT(key []byte) *Span {
-	span := t.FragmentIterator.SeekLT(key)
-	if span == nil {
-		return nil
-	}
-	return t.applyTransform(span)
-}
-
-// First implements the FragmentIterator interface.
-func (t *TransformerIter) First() *Span {
-	span := t.FragmentIterator.First()
-	if span == nil {
-		return nil
-	}
-	return t.applyTransform(span)
-}
-
-// Last implements the FragmentIterator interface.
-func (t *TransformerIter) Last() *Span {
-	span := t.FragmentIterator.Last()
-	if span == nil {
-		return nil
-	}
-	return t.applyTransform(span)
-}
-
-// Next implements the FragmentIterator interface.
-func (t *TransformerIter) Next() *Span {
-	span := t.FragmentIterator.Next()
-	if span == nil {
-		return nil
-	}
-	return t.applyTransform(span)
-}
-
-// Prev implements the FragmentIterator interface.
-func (t *TransformerIter) Prev() *Span {
-	span := t.FragmentIterator.Prev()
-	if span == nil {
-		return nil
-	}
-	return t.applyTransform(span)
-}
-
-// Error implements the FragmentIterator interface.
-func (t *TransformerIter) Error() error {
-	if t.err != nil {
-		return t.err
-	}
-	return t.FragmentIterator.Error()
-}
-
-// Close implements the FragmentIterator interface.
-func (t *TransformerIter) Close() error {
-	err := t.FragmentIterator.Close()
-	if err != nil {
-		return err
-	}
-	return t.err
-}