Revert "Fix estimate_nccl_collective_runtime (#118986)"
This reverts commit 0dab6fb35284ed47d1c6339e9d71e4ca3b50dc51.
Reverted https://github.com/pytorch/pytorch/pull/118986 on behalf of https://github.com/atalman due to Breaks internal tests ([comment](https://github.com/pytorch/pytorch/pull/118986#issuecomment-1934680463))
