nfsv3: remove unnecessary call of Inode#toString for logging

the call of Inode#toString for logging is redundant, especially when
logger is disabled.

Acked-by: Lea Morschel
Acked-by: Paul Millar
Target: master

core/src/main/java/org/dcache/nfs/v3/NfsServerV3.java

@@ -468,7 +468,7 @@ public class NfsServerV3 extends nfs3_protServerStub {
 
         try{
             Inode inode = new Inode(arg1.object.data);
-            _log.debug("NFS Request GETATTR for inode: {}", inode.toString());
+            _log.debug("NFS Request GETATTR for inode: {}", inode);
 
             res.status = nfsstat.NFS_OK;
             res.resok = new GETATTR3resok();