Add HAPI cleanup code
Add HAPI cleanup code

sideeffects/HoudiniEngineForMaya,pokyfudywise/HoudiniEngineForMaya,pokyfudywise/HoudiniEngineForMaya,sideeffects/HoudiniEngineForMaya,pokyfudywise/HoudiniEngineForMaya,sideeffects/HoudiniEngineForMaya