chore: remove no longer used ci configuration

setup.cfg

@@ -38,23 +38,3 @@ package_dir = weblate_language_data=weblate_language_data
 
 [options.extras_require]
 django = Django
-
-[flake8]
-max-complexity = 16
-extend-select = E,W1,W2,W3,W504,W505,W6
-enable-extensions = B,C,D,F,G,I,M,N,R,SF
-# Should be fixed:
-#  D10 - we are missing many docstrings
-#  D20* - wrong docstring formatting
-#  D40* - many strings need rephrasing
-extend-ignore = D10,D200,D202,D204,D205,D209,D401,T201,T203
-exclude = .git,docs,.venv,build,.eggs
-max-line-length = 88
-per-file-ignores =
-    weblate_language_data/languages.py:E501
-    weblate_language_data/plurals.py:E501
-
-[pycodestyle]
-extend-select = E,W1,W2,W3,W504,W505,W6
-exclude = .git,docs,.venv,build,.eggs
-max-line-length = 88