Remove optimizer_results from save attrs
Remove optimizer_results from save attrs

-the optimizer result contains the full jacobian matrix,
which is really big (>200M) for high res stellarators.
-Saving this (esp for multiple iterations) is pretty wasteful,
and the resulting h5 files take up a ton of space.
-Now the dict is not saved to h5, but still available locally.

PlasmaControl/DESC,PlasmaControl/DESC