Remove pylint checks also done by flake8

This is part of the upgrade of repo-config from v0.8 to v0.9. See:
https://github.com/frequenz-floss/frequenz-repo-config-python/releases/tag/v0.9.0

Signed-off-by: Leandro Lucarella <[email protected]>

Author: llucax

pyproject.toml

@@ -152,6 +152,8 @@ disable = [
   # it is a type-check, for which we already have mypy.
   "unsubscriptable-object",
   # Checked by flake8
+  "redefined-outer-name",
+  "unused-import",
   "line-too-long",
   "redefined-outer-name",
   "unnecessary-lambda-assignment",