[Release] Fix format and cherry-pick

[zhewenl]

pre-commit is failing with ruff format, and:

vllm/model_executor/layers/quantization/utils/nvfp4_moe_support.py:7: error: Module "vllm.model_executor.layers.quantization.utils.flashinfer_fp4_moe" has no attribute "is_flashinfer_fp4_cutedsl_moe_available"  [attr-defined]
vllm/model_executor/layers/quantization/utils/nvfp4_moe_support.py:7: error: Module "vllm.model_executor.layers.quantization.utils.flashinfer_fp4_moe" has no attribute "is_flashinfer_fp4_cutlass_moe_available"  [attr-defined]
Found 2 errors in 1 file (checked 247 source files)

the reason is cherry-pick has issues to pick up file deletion from https://github.com/vllm-project/vllm/pull/33417/changes#diff-4891f492083262364aca6d94bc2d421c3f95c1e408e7eac6e4c90275d3446480 to 15ebd0c

test with pre-commit:

pre-commit run --all-files
ruff check..........................................................................................Passed
ruff format.........................................................................................Passed
typos...............................................................................................Passed
clang-format........................................................................................Passed
Lint GitHub Actions workflow files..................................................................Passed
pip-compile.........................................................................................Passed
reformat nightly_torch_test.txt to be in sync with test.in..........................................Passed
Run mypy locally for lowest supported Python version................................................Passed
Lint shell scripts..................................................................................Passed
Lint PNG exports from excalidraw....................................................................Passed
Check SPDX headers..................................................................................Passed
Check root lazy imports.............................................................................Passed
Check for spaces in all filenames...................................................................Passed
Update Dockerfile dependency graph..................................................................Passed
Enforce import regex as re..........................................................................Passed
Forbid direct 'import triton'.......................................................................Passed
Prevent new pickle/cloudpickle imports..............................................................Passed
Validate configuration has default values and that each field has a docstring.......................Passed
Validate docker/versions.json matches Dockerfile....................................................Passed
Suggestion..........................................................................................Passed
- hook id: suggestion
- duration: 0s

To bypass all the pre-commit hooks, add --no-verify to git commit. To skip a specific hook, prefix the commit command with SKIP=<hook-id>.

[gemini-code-assist]

Code Review

This pull request correctly addresses pre-commit failures. The primary change is the deletion of vllm/model_executor/layers/quantization/utils/nvfp4_moe_support.py, which resolves import errors caused by a previous incomplete cherry-pick. Additionally, an import statement in vllm/model_executor/models/step3p5.py has been reordered to comply with code formatting standards. These changes are appropriate and improve the codebase's integrity. The pull request is ready for merging.