Remove mark_step for cuda and cpu

[yiliu30]

Type of Change

API changed or not: None

Description

The cpu and cuda do not have mark_step, reuse the Auto_Accelerator's mark_step (return None).

How has this PR been tested?

Local test on machine with cuda.

Dependency Change?

None

[github-actions]

⚡ Required checks status: All passing 🟢

Groups summary

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These checks are required after the changes to neural_compressor/torch/utils/auto_accelerator.py.

🟢 Model Tests 3x workflow

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Model-Test-3x	success		✅
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Model-Test-3x (Run PyTorch Model opt_125m_woq_gptq_int4)	success		✅
Model-Test-3x (Run PyTorch Model opt_125m_woq_gptq_int4_dq_bnb)	success		✅
Model-Test-3x (Run PyTorch Model opt_125m_woq_gptq_int4_dq_ggml)	success		✅

These checks are required after the changes to neural_compressor/torch/utils/auto_accelerator.py.

🟢 Unit Tests 3x-PyTorch workflow

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UT-3x-Torch	success		✅
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UT-3x-Torch (Unit Test 3x Torch baseline Unit Test 3x Torch baseline)	success		✅

These checks are required after the changes to neural_compressor/torch/utils/auto_accelerator.py.

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