qa_tests/risk:
qa_tests/risk:

Removed base class `test` methods so that nosetests doesn't get
confused when collecting tests. The presence of the base class
methods was causing risk qa tests to be included in nosetests'
test collection when `nosetests -a '!qa'` was explicitly used.


Former-commit-id: 9ed45aa8bff5c96923f349f3e1588962e4669665
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine