remove CarVin parameter

common/params.cc

@@ -104,7 +104,6 @@ std::unordered_map<std::string, uint32_t> keys = {
     {"CarParamsCache", CLEAR_ON_MANAGER_START},
     {"CarParamsPersistent", PERSISTENT},
     {"CarParamsPrevRoute", PERSISTENT},
-    {"CarVin", CLEAR_ON_MANAGER_START | CLEAR_ON_ONROAD_TRANSITION},
     {"CompletedTrainingVersion", PERSISTENT},
     {"ControlsReady", CLEAR_ON_MANAGER_START | CLEAR_ON_ONROAD_TRANSITION},
     {"CurrentBootlog", PERSISTENT},

selfdrive/car/car_helpers.py

@@ -132,7 +132,6 @@ def fingerprint(logcan, sendcan, num_pandas):
     carlog.error({"event": "Malformed VIN", "vin": vin})
     vin = VIN_UNKNOWN
   carlog.warning("VIN %s", vin)
-  params.put("CarVin", vin)
 
   # disable OBD multiplexing for CAN fingerprinting and potential ECU knockouts
   set_obd_multiplexing(params, False)