Some evaluation results are missing

In `scores.txt` of the current uploaded trained model, evaluation results at `55000000` and `56000000` are missing.

https://github.com/muupan/async-rl/blob/0ec501c36b6cdbe3888d3a6fc0043e4bc6c2cba3/trained_model/breakout/scores.txt#L55

I don't know why and whether it can affect performance. I need to check.
