Fix bad merge (#7)

Revert "Release swap buffers for persisted params (microsoft#2089)" (#6)

This reverts commit 2210ebe.

Revert "Refactor ZeRO configs to use Pydantic (microsoft#2004)" (#5)

This reverts commit 5997589.

[deepspeed/autotuner] Fix missing hjson import (#4)

[deepspeed/autotuner] Bug fix for binary search for batch size. (#1)

* bug fix for binary search for batch size

* fix binary search termination condition