Remove pytest from tox

.gitlab-ci.yml

@@ -21,6 +21,8 @@ before_script:
 
 test:
   script:
+    - source venv/bin/activate
+    - which pip; which python
     - pip install pytest tox  # you can also use tox
     - pip install --editable ".[test]"
     - python -m tox -e py