STYLE: Clean up the collision tests

...sionDetection/Testing/imstkMeshToMeshBruteForceCDTest.cpp

...llisionDetection/Testing/imstkPointSetToCapsuleCDTest.cpp

...ionDetection/Testing/imstkPointSetToOrientedBoxCDTest.cpp

...CollisionDetection/Testing/imstkPointSetToPlaneCDTest.cpp

...ollisionDetection/Testing/imstkPointSetToSphereCDTest.cpp

...ollisionDetection/Testing/imstkSphereToCylinderCDTest.cpp

.../CollisionDetection/Testing/imstkSphereToSphereCDTest.cpp

...CollisionDetection/Testing/imstkTetraToPointSetCDTest.cpp

Source/Geometry/Mesh/imstkVolumetricMesh.h