[MISC] Remove unused variableds in C++

[houseroad]

Essential Elements of an Effective PR Description Checklist

• The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
• The test plan, such as providing test command.
• The test results, such as pasting the results comparison before and after, or e2e results
• (Optional) The necessary documentation update, such as updating supported_models.md and examples for a new model.

Purpose

Some C++ code contain unused definition / var. We used [[maybe_unused]] to mark them. Now clean up

Test Plan

AMD: build from scratch
Nvidia: build from scratch
Also CI

Test Result

AMD built successfully
Nvidia built successfully
CI built successfully.

(Optional) Documentation Update

N/A

[github-actions]

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[gemini-code-assist]

Summary of Changes

Hello @houseroad, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on code hygiene by removing variables that were identified as unused and marked with the [[maybe_unused]] attribute. The changes span several core components including attention, quantization, and input preparation kernels, aiming to simplify the code and eliminate compiler warnings related to unused entities.

Highlights

• Code Cleanup: Removed various unused variables across C++ and CUDA source files that were previously marked with the [[maybe_unused]] attribute.
• Kernel Optimization: Cleaned up unused local and shared memory variables within attention, quantization, and input preparation kernels.
• Template Update: Removed unused variables from a Python template file used to generate C++ quantization code.

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[gemini-code-assist]

Code Review

This pull request aims to clean up unused variables marked with [[maybe_unused]] in C++ code. While several cleanups are correct, there are a few critical issues in csrc/attention/paged_attention_v1.cu, csrc/attention/paged_attention_v2.cu, and csrc/quantization/machete/generate.py that will lead to compilation errors. These need to be addressed.

Additionally, the pull request title has a small typo: "variableds" should be "variables".

[houseroad]

/gemini review

[gemini-code-assist]

Code Review

This pull request removes unused variables and definitions, improving code readability. Ensure Nvidia and CI tests are completed to verify the changes.

[mgoin]

LGTM thanks for cleanup cc @tlrmchlsmth

[LucasWilkinson]

Thank you!!

[hongxiayang]

always good to clean up