Revert "optimize sampled_addmm performance on CPU (SparseCSR) (#90978)"
This reverts commit 645fb217c06348a4f1ccdf68a93bd711f7158c62.
Reverted https://github.com/pytorch/pytorch/pull/90978 on behalf of https://github.com/seemethere due to This broke internal builds for android due to the new file added being missing in build_variables.bzl
