Documentation only and unused defines only cleanup.

src/modules/commander/airspeed_calibration.h

src/modules/commander/baro_calibration.cpp

src/modules/commander/baro_calibration.h

src/modules/commander/calibration_messages.h

src/modules/commander/calibration_routines.cpp

src/modules/commander/calibration_routines.h

src/modules/commander/mag_calibration.h

src/modules/commander/state_machine_helper.h