feat:remove unused func and support deepseek_v4_mtp graph on npu.

[panxua]

No description provided.

[gemini-code-assist]

Code Review

This pull request refactors DeepSeek V4 and MTP model implementations to support ACL graph forward metadata, introducing actual_metadata_rows to handle MTP validation scenarios. Key changes include replacing the is_deepseek_v4_model_type utility with explicit string comparisons and updating GraphPersistentParam logic. Review feedback highlights several critical issues: a missing tokens argument in mtp_block_ calls that will cause compilation errors, the removal of layer_index capping which risks out-of-bounds access, and a potential device mismatch when initializing runtime_device. Additionally, the reviewer recommended using emplace_back instead of push_back for torch::Tensor elements to align with the style guide.

[gemini-code-assist]

Prefer emplace_back over push_back to avoid unnecessary copies of torch::Tensor objects.

References

1. Prefer emplace_back over push_back to construct elements in-place and avoid unnecessary copies. ^(link)