Revert "ilm: Remove null version if not latest with proper config (#10467)"

This reverts commit 4b6264da7d.

cmd/xl-storage-format-v2.go

@@ -341,10 +341,7 @@ func (j xlMetaV2DeleteMarker) ToFileInfo(volume, path string) (FileInfo, error)
 	// check if the version is not "null"
 	if !bytes.Equal(j.VersionID[:], uv[:]) {
 		versionID = uuid.UUID(j.VersionID).String()
-	} else {
-		versionID = nullVersionID
 	}
-
 	fi := FileInfo{
 		Volume:    volume,
 		Name:      path,
@@ -361,10 +358,7 @@ func (j xlMetaV2Object) ToFileInfo(volume, path string) (FileInfo, error) {
 	// check if the version is not "null"
 	if !bytes.Equal(j.VersionID[:], uv[:]) {
 		versionID = uuid.UUID(j.VersionID).String()
-	} else {
-		versionID = nullVersionID
 	}
-
 	fi := FileInfo{
 		Volume:    volume,
 		Name:      path,