Remove optics_properties - this is not a model parameter.

This parameter is a bit of an outlier and I am really not sure it should be a model parameter, but rather a derived quantity stored somewhere else.

Here is an example file:

https://gitlab.cta-observatory.org/cta-science/simulations/simulation-model/simulation-models/-/blob/main/simulation-models/model_parameters/Files/ray-tracing-South-SST-D-d10.0-za20.0_validate_optics.ecsv?ref_type=heads