Back out "Make adding buffers more like adding parameters (#104069)" (#105581)
Summary:
D47537831 is breaking pyper tests: https://fb.workplace.com/groups/802176577445480/posts/1018902842439518/
with `TypeError: register_buffer() takes 3 positional arguments but 4 were given`
Original commit changeset: d4b4069fbd38
Original Phabricator Diff: D47537831
Test Plan:
```
buck2 run //caffe2/torch/fb/training_toolkit/integration_tests/training_lifecycle/cogwheel_tests/pyper_release_v2:cogwheel_smallworld_inline_cvr_infer_pyper_pyper__canary_offline_training-launcher -- --run-harness-in-tupperware --build-fbpkg ads_dper3 --build-fbpkg training_platform
```
Reviewed By: atalman
Differential Revision: D47600140
Pull Request resolved: https://github.com/pytorch/pytorch/pull/105581
Approved by: https://github.com/mikaylagawarecki
