Common CI._update function (#33289)

* use CP

* no car control, consistent _update function signatures

* eh it's fine to name it whatever

* clean up

* oops

* !!

* now we can delete this!

* nobody does anymore
old-commit-hash: 7248b00086f9b8d5d95c80a2eb7fe89c387f44ea

selfdrive/car/tesla/interface.py

@@ -38,6 +38,3 @@ class CarInterface(CarInterfaceBase):
     ret.steerLimitTimer = 1.0
     ret.steerActuatorDelay = 0.25
     return ret
-
-  def _update(self):
-    return self.CS.update(self.cp, self.cp_cam)