eliminate pre-existing unused SP.StopMovement()

OpenSim/Region/Framework/Scenes/ScenePresence.cs

@@ -1076,13 +1076,6 @@ namespace OpenSim.Region.Framework.Scenes
             SendTerseUpdateToAllClients();
         }
         
-        /// <summary>
-        ///
-        /// </summary>
-        public void StopMovement()
-        {
-        }
-
         public void StopFlying()
         {
             ControllingClient.StopFlying(this);