daemon/images: removed "found leaked image layer" warning, because it is expected now with buildkit

Signed-off-by: Tibor Vass <tibor@docker.com>
(cherry picked from commit 5aa222d0fe5a420dae96be0c04a33308823e0d0f)
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Upstream-commit: bb2adc4496f2fd1b755fc701dbed5dab33175efd
Component: engine

components/engine/daemon/images/service.go

@@ -205,8 +205,6 @@ func (i *ImageService) LayerDiskUsage(ctx context.Context) (int64, error) {
 				if err == nil {
 					if _, ok := layerRefs[l.ChainID()]; ok {
 						allLayersSize += size
-					} else {
-						logrus.Warnf("found leaked image layer %v", l.ChainID())
 					}
 				} else {
 					logrus.Warnf("failed to get diff size for layer %v", l.ChainID())