Remove unused field

Author: keveleigh

org.mixedrealitytoolkit.input/Simulation/Devices/SimulatedHMD.cs

@@ -44,7 +44,6 @@ internal class SimulatedHMD : IDisposable
 
         // Smoothing time for the camera position.
         private const float moveSmoothingTime = 0.02f;
-        private Vector3 curVelocity = Vector3.zero;
 
         /// <summary>
         /// Initializes a new instance of a <see cref="SimulatedHMD"/> class.