Remove old code `com.Sigmoidparameter.calculate(...)`

[lord-haffi]

This piece of code is from 2021. Since we kicked all validation logic besides basic type checking, we may want to get rid of it.
Please give thumbs up or down or comment your thoughts on it.

[hf-kklein]

fine for me, but does it hurt?

[lord-haffi]

Only if this function is in use somewhere. I don't think it is. But I'd say that if people are using this method they can easily recreate it for themselves.

[hf-kklein]

well then: #793