remove 'purge trash can' (if present in Python client)
This is the PY client side of PLFM-5152. Not sure if Python client calls 'purge trash can' but if so we should remove it.
, we introduced purge trash can to the client in - to be validated and released in the Python client 1.9.0. We can remove this service prior to releasing Python client version 1.9.0 so that we do not have to wait for user to upgrade from 1.9.0 to later release.