Fixes for bumping pyt to 25.01

[maanug-nv]

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[akoumpa]

Awesome, thank you.

[chtruong814]

@maanug-nv thanks for this. would you please fix the lint error and also run the one or more tests that you were aiming to fix on this branch? No need to run them all. Then we can merge into Oliver's branch.

[maanug-nv]

Triggered with 'L0_Unit_Tests_GPU_Lightning': https://github.com/NVIDIA/NeMo/actions/runs/13321343572

test_state_restoration.py::test_optim_state_restoration and test_nemo_resume_from_ckpt.py::TestCkptStateRestoration::test_resume_optim_state should pass.

[akoumpa]

Removed the unused import, and triggered same test on CI https://github.com/NVIDIA/NeMo/actions/runs/13323641272

[maanug-nv]

Reran after merging in base branch: https://github.com/NVIDIA/NeMo/actions/runs/13325113240