fixup! ci.yml - drop installation of libffi7

Author: pavoljuhas

.github/workflows/ci.yml

@@ -287,7 +287,6 @@ jobs:
           cache-dependency-path: |
             **/requirements.txt
             dev_tools/requirements/**/*.txt
-      - name: Install system requirements
       - name: Install requirements
         run: |
           pip install --upgrade setuptools wheel