Remove broken code that never returned the current of the LEDs in AMPs

[zhengmaxwell]

moved find_max_brightness to python-owl in order to be compatible with analog settings
https://gitlab.com/ramonaoptics/mcam/python-owl/-/issues/783

[hmaarrfk]

Tests are failing due to the removal of the find max brightness in the API. Please leave that in.

You can override it in our subclass.

Finally, you can remove the analog one. It was broken anyway

[zhengmaxwell]

Ok I'll leave those two functions in. We can close this PR then.
When you say "remove the analog one", do you mean the previous PR: #8

[hmaarrfk]

Please see new PR. Generally speaking, you cannot simply remove functions from a public API.

People do start to rely on them.

You can however remove broken code that was never working.

For things that are specific to our hardware, we can always overwrite the properties.