fix: don't package tests (#193)
fix: don't package tests (#193)

caused by https://github.com/googleapis/python-resource-manager/pull/62/commits/8fa2ec41d6ab4cf4975b2663afcd86fe40256d20

Apoligies if I'm missing something: I'm not entirely sure why the local packages/namespaces are still being generated but then discarded for the actual `setuptools.setup`.

Co-authored-by: Anthonios Partheniou <50de7473c4bcd6fb06c46bebfdc91e30df56824a@google.com>
googleapis/python-resource-manager,googleapis/python-resource-manager