Remove unneeded per-file ignore

Author: edoardob90

pyproject.toml

@@ -86,8 +86,6 @@ select = [
 # but Python by default will raise a TypeError via vars(solution_result)
 # if the result is not a class and therefore doesn't have a __dict__ attribute.
 "tutorial/tests/test_object_oriented_programming.py" = ["B904"]
-# Ignore invalid names like `import torch.nn.functional as F`
-"25_library_pytorch_language_modeling.ipynb" = ["N812"]
 
 # Ruff formatting
 [tool.ruff.format]