Revert "Sensor: Add RotationVectorSensor2"
  * No one uses this?
This reverts commit 8cfc96871c2e8e42d5b50f8a0b5a48d9637d11da.

Change-Id: I93262ab2ad852d7dc59edf9877003e973bdd061f
Signed-off-by: Josue Rivera <prbassplayer@gmail.com>