Package check result: NOTE

Check: examples, Result: NOTE
  Examples with CPU (user + system) or elapsed time > 5s
               user system elapsed
  cla_xgboost 36.24  0.147   1.388
  Examples with CPU time > 2.5 times elapsed time
               user system elapsed  ratio
  cla_xgboost 36.24  0.147   1.388 26.215

No changes to worse in reverse depends.