Revert "[Reland] Upgrade NVTX to NVTX3 (#97582)"
This reverts commit 5bbfb96203370f73b4cd28e6ac766a26debce3df.
Reverted https://github.com/pytorch/pytorch/pull/97582 on behalf of https://github.com/izaitsevfb due to Breaks meta RL builds ([comment](https://github.com/pytorch/pytorch/pull/97582#issuecomment-1679568525))
