REFAC: Clear some warnings

...nDetection/CollisionDetection/imstkPointSetToSphereCD.cpp

...onDetection/CollisionDetection/imstkTetraToPointSetCD.cpp

Source/CollisionHandling/imstkPBDPickingCH.cpp

Source/CollisionHandling/imstkRigidBodyCH.cpp

Source/Common/Testing/imstkTaskGraphTest.cpp

...onstraint/PbdConstraints/imstkPbdPointPointConstraint.cpp

.../DynamicalModels/ObjectModels/imstkPbdConstraintFunctor.h

Source/DynamicalModels/ObjectModels/imstkSPHModel.cpp

Source/Scene/imstkRigidObjectCollision.cpp

Source/SceneEntities/Objects/imstkDebugGeometryObject.cpp