remove unused parameter from docstring

:param params: The microscope parameter dictionary

:param optics_config: Optics configuration dictionary

:param base_r: Radius of the base central point of the mount body

:param message: Message to be printed on the base (used to denote upright versions)

*/

module camera_platform(params, optics_config, base_r){

    assert(key_lookup("optics_type", optics_config)=="spacer", "Use spacer optics configuration to create a camera_platform.");