GitHub Action: There is no requirements.txt

.github/workflows/Python_tests.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install flake8 pytest -r requirements.txt
+          pip install flake8 pytest  # -r requirements.txt
       #- name: Check formatting with black
       #  if: matrix.python-version == '3.8'
       #  run: |