storage: fs: don't rotate LOG file on open
diff --git a/leveldb/storage/file_storage.go b/leveldb/storage/file_storage.go
index 76d0688..3650929 100644
--- a/leveldb/storage/file_storage.go
+++ b/leveldb/storage/file_storage.go
@@ -79,7 +79,6 @@
 		}
 	}()
 
-	rename(filepath.Join(path, "LOG"), filepath.Join(path, "LOG.old"))
 	logw, err := os.OpenFile(filepath.Join(path, "LOG"), os.O_WRONLY|os.O_CREATE, 0644)
 	if err != nil {
 		return nil, err