Fix the times plot in eval demo.
Fix the times plot in eval demo.

vaibhav345/lenskit,binweiwu/lenskit,linjunleo/lenskit,tajinder-txstate/lenskit,kluver/lenskit,vijayvani/Lenskit,kluver/lenskit,aglne/lenskit,tajinder-txstate/lenskit,kluver/lenskit,amaliujia/lenskit,linjunleo/lenskit,tajinder-txstate/lenskit,kluver/lenskit,vaibhav345/lenskit,blankazucenalg/lenskit,vijayvani/Lenskit,tajinder-txstate/lenskit,chrysalag/lenskit,aglne/lenskit,vaibhav345/lenskit,amaliujia/lenskit,kluver/lenskit,chrysalag/lenskit,martinlaz/lenskit,binweiwu/lenskit,vaibhav345/lenskit,blankazucenalg/lenskit,martinlaz/lenskit