benchmark

429137dd - enforce style for empty lines in import segments in `benchmarks/` (#129754)

enforce style for empty lines in import segments in `benchmarks/` (#129754) Summary: See https://github.com/pytorch/pytorch/pull/129751#issue-2380881501. Most changes are auto-generated by linter. You can review these PRs via: ```bash git diff --ignore-all-space --ignore-blank-lines HEAD~1 ``` X-link: https://github.com/pytorch/pytorch/pull/129754 Approved by: https://github.com/ezyang Reviewed By: atalman Differential Revision: D59861946 fbshipit-source-id: 93bfa5ecad9f42db20e3efa1c302c737f48c6188