HDDS-1655. Redundant toString() call for metaDataPath in KeyValueContainerCheck (#932)

hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/keyvalue/KeyValueContainerCheck.java

@@ -279,9 +279,8 @@ public class KeyValueContainerCheck {
   }
 
   private void loadContainerData() throws IOException {
-
     File containerFile = KeyValueContainer
-        .getContainerFile(metadataPath.toString(), containerID);
+        .getContainerFile(metadataPath, containerID);
 
     onDiskContainerData = (KeyValueContainerData) ContainerDataYaml
         .readContainerFile(containerFile);