refactor: remove support for actuators decorated with ray.remote

#185 introduced dynamic decorator of Actuators - meaning actuators did not have to have @ray.remote. 
It also added a function to remove the decoration from any actuators that still had it for compatibility. 

#564 removed this decorator from all in-repo actuators. 

Hence it's likely this extraction function is no longer needed and should be removed by a TBD date. 

