chore: drop flake8 added deps from pre-commit

Going to rely on actual isort and bandit instead of these plugins,
as they can't seem to keep up with flake8 itself.
Plus, these plugins just help with including isort and bandit checks
within flake8 reporting;
the real tools are better at doing that themselves.

.pre-commit-config.yaml

@@ -24,9 +24,6 @@ repos:
     rev: "5.0.4"
     hooks:
       - id: flake8
-        additional_dependencies:
-          - flake8-bandit~=3.0.0
-          - flake8-isort~=4.1.1
   - repo: https://github.com/PyCQA/bandit/
     rev: "1.7.4"
     hooks: