Revert "[Refactor] Fix Compile Warning #1444-D (#21208)"

[yewentao256]

This reverts commit 6e5b5ca.

Purpose

#21208

Seems this break the compilation on AMD device, let's revert this first. And I will have another pr fixing the warning, and the same time having the AMD support as well, but it needs some time to set up the env for amd server, so let's just revert it first so that we don't block users

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[gemini-code-assist]

Code Review

This pull request reverts a previous commit, resolving a critical compilation issue on AMD devices. However, the reverted code reintroduces a deprecated CUDA API (cub::Sum) and a potentially unnecessary header (<cuda/std/functional>), which should be addressed in a follow-up PR to ensure long-term maintainability and avoid future compatibility issues.