remove docstrings from tests
remove docstrings from tests


Former-commit-id: d67e8be6b76eae3023b2cfeefb14ad4d41a9c3c5 [formerly 8850d02f793c7b903b9a62ed6d11d30a693fcde4]
Former-commit-id: 0e4f69b66679bb2c33454b943dece8763597c660
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine