Improve Flake8 config (#429)

Use only Black compat options. Removing 'select' declaration means that plugin error codes are selected by default.

Author: adamchainz

setup.cfg

@@ -59,6 +59,5 @@ source =
 show_missing = True
 
 [flake8]
-max-line-length = 80
-select = E,F,W,B,B950,C,I,TYP
-ignore = E203,E501,W503
+max-line-length = 88
+extend-ignore = E203

src/pytest_randomly/__init__.py

@@ -126,7 +126,7 @@ def pytest_configure(config: Config) -> None:
 
 class XdistHooks:
     # Hooks for xdist only, registered when needed in pytest_configure()
-    # https://docs.pytest.org/en/latest/writing_plugins.html#optionally-using-hooks-from-3rd-party-plugins  # noqa: B950
+    # https://docs.pytest.org/en/latest/writing_plugins.html#optionally-using-hooks-from-3rd-party-plugins  # noqa: E501
 
     def pytest_configure_node(self, node: Item) -> None:
         seed = node.config.getoption("randomly_seed")