HandConstraint* cleanup

Author: davidkline-ms

Assets/MRTK/SDK/Features/Utilities/Solvers/HandConstraint.cs

@@ -547,7 +547,7 @@ private static Ray CalculateRayForSafeZone(
                             direction = IsPalmFacingCamera(hand) ? direction : -direction;
                         }
 
-                        if (hand.ControllerHandedness == Handedness.Right)
+                        if (hand.ControllerHandedness.IsRight())
                         {
                             direction = -direction;
                         }
@@ -672,7 +672,7 @@ private static bool IsPalmFacingCamera(IMixedRealityController hand)
         /// </remarks>
         private static bool IsApplicableController(IMixedRealityController controller)
         {
-            return controller.ControllerHandedness != Handedness.None;
+            return !controller.ControllerHandedness.IsNone();
         }
 
         /// <summary>

Assets/MRTK/SDK/Features/Utilities/Solvers/HandConstraintPalmUp.cs

@@ -367,9 +367,6 @@ private bool TryGenerateActivationPoint(IMixedRealityHand jointedHand, out Vecto
                     referenceJoint2 = TrackedHandJoint.Palm;
                     break;
                 case SolverSafeZone.RadialSide:
-                    referenceJoint1 = TrackedHandJoint.IndexKnuckle;
-                    referenceJoint2 = TrackedHandJoint.ThumbProximalJoint;
-                    break;
                 case SolverSafeZone.UlnarSide:
                 default:
                     referenceJoint1 = TrackedHandJoint.IndexKnuckle;