Removed vulture from Tox (it rarely made any findings, and when it did, pylint reported the same issues).

.github/workflows/tox.yaml

@@ -18,7 +18,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install -U codecov coveralls flake8 mypy pylint pytest tox vulture
+          pip install -U codecov coveralls flake8 mypy pylint pytest tox
       - name: Run Tox
         run: |
           tox