pytest: fix register_assert_rewrite call Since a while, the test suite shows following warning: kallithea/tests/__init__.py:29 /home/tdescham/repo/contrib/kallithea/kallithea-review/kallithea/tests/__init__.py:29: PytestAssertRewriteWarning: Module already imported so cannot be rewritten: kallithea.tests pytest.register_assert_rewrite('kallithea.tests') The problem can be fixed by moving the register_assert_rewrite call from kallithea/tests/__init__.py to the root-level conftest.py, outside of the 'kallithea' module.