removing unused testing stuff

testing/dummy_tests/__init__.py

testing/dummy_tests/always_fail/__init__.py

testing/dummy_tests/always_fail/test_always_fails.py

testing/dummy_tests/always_pass/__init__.py

testing/dummy_tests/always_pass/test_always_passes.py

testing/dummy_tests/always_pass/test_always_passes_too.py

testing/integration/README.md

testing/integration/__init__.py

testing/integration/test_amqp.py

testing/integration/test_capability_service.py

testing/integration/test_json.py

testing/integration/test_persistence.py

testing/integration/test_workflow_service.py

testing/package_tester/README.md

testing/package_tester/__init__.py

testing/package_tester/package_tester/__init__.py

testing/package_tester/package_tester/_version.py

testing/package_tester/package_tester/package_tester.py

...ing/package_tester/package_tester/package_tester_utils.py

testing/package_tester/setup.py