Flake8 removed.

.github/workflows/test.yml

@@ -31,9 +31,8 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install -r requirements-dev.txt
-      - name: Lint with flake8 and pylint
+      - name: Lint pylint
         run: |
-          flake8
           pylint src/*.py test/*.py
       - name: Test with pytest
         run: |