Remove pytest-runner

setup.cfg

@@ -1,12 +1,10 @@
-[aliases]
-test = pytest
-
 [bdist_wheel]
 python-tag = py3
 
 [tool:pytest]
-# More options are set in `setup.py` via environment variable `PYTEST_ADDOPTS`
-addopts = --flake8 --isort --typeguard-packages=radicale --cov --cov-report=term --cov-report=xml -r s
+# The "--mypy" argument is ignored in conftest.py if pytest-mypy is not
+# installed and the implementation is not cpython
+addopts = --flake8 --isort --typeguard-packages=radicale --mypy --cov --cov-report=term --cov-report=xml -r s
 norecursedirs = dist .cache .git build Radicale.egg-info .eggs venv
 
 [tool:isort]