[CI] Remove legacy dequantize gemm test

[LeiWang1999]

as title.

Summary by CodeRabbit

• Chores
  • Removed example script demonstrating grouped matrix multiplication with quantization support
  • Removed associated test and regression test cases for the deleted example
  • Removed an alternative GEMM example regression execution path

[github-actions]

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 0549db59-6e3e-4395-b90a-fb5cf4a798a1

📥 Commits

Reviewing files that changed from the base of the PR and between 01c714d and 204fd2d.

📒 Files selected for processing (4)

• examples/dequantize_gemm/example_dequant_groupedgemm_bf16_mxfp4_hopper.py
• examples/dequantize_gemm/regression_example_dequantize_gemm.py
• examples/dequantize_gemm/test_example_dequantize_gemm.py
• examples/gemm/regression_example_gemm.py

💤 Files with no reviewable changes (4)

• examples/dequantize_gemm/regression_example_dequantize_gemm.py
• examples/dequantize_gemm/test_example_dequantize_gemm.py
• examples/gemm/regression_example_gemm.py
• examples/dequantize_gemm/example_dequant_groupedgemm_bf16_mxfp4_hopper.py

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📝 Walkthrough

Walkthrough

This PR removes an example GEMM kernel script with FP4 dequantization for Hopper GPUs, along with its associated test function and regression wrapper across three test/regression files.

Changes

Cohort / File(s)	Summary
Example Dequantization Script Removal examples/dequantize_gemm/example_dequant_groupedgemm_bf16_mxfp4_hopper.py	Deleted entire example file (~571 lines) including: autotuning config generator, JIT-compiled grouped GEMM kernel with FP4 dequantization and bias fusion paths, dequantization helper macros, reference implementation, benchmarking logic, and CLI entrypoint.
Test & Regression Wrapper Cleanup examples/dequantize_gemm/regression_example_dequantize_gemm.py, examples/dequantize_gemm/test_example_dequantize_gemm.py	Removed imports and corresponding wrapper functions: regression_example_dequant_groupedgemm_bf16_mxfp4_hopper() and test_example_dequant_groupedgemm_bf16_mxfp4_hopper().
GEMM Regression Cleanup examples/gemm/regression_example_gemm.py	Removed regression_example_gemm_schedule() wrapper function and its import, eliminating schedule-based GEMM regression path.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related PRs

• [Enhancement] Add a MXFP4 grouped GEMM example for FusedMoE #811: Directly related — added the example file that this PR now removes, overlapping on the same files and functionality.
• [CI] Removes debug print statements from the example. #1030: Related — contains modifications (debug-print removal, CLI/tune flag changes) to the example file that is now being deleted in this PR.
• [Example] add w4a8 gemm kernel #815: Related — both involve FP4 dequantization GEMM examples under the examples/dequantize_gemm directory with overlapping example surface area.

Suggested reviewers

• tzj-fxz

Poem

🐰 The example hops away into the void,
No more MoE-like GEMMs to deploy,
Regression paths trimmed with care,
Hopper's fancy kernels fade in the air,
Cleanup done, the code is lighter! 🌙

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: removal of a legacy dequantize GEMM test, which aligns with all modified files deleting references to the example_dequant_groupedgemm_bf16_mxfp4_hopper example and its associated test infrastructure.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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