This reverts commit a66e3e57.

Reason for revert: Likely to have caused UBSAN issues: https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20UBSan/6671

Original change's description:
> [csa] Tweak CSA pipeline to eliminate more redundant checks
> 
> - Lower LoadObjectField to LoadFromObject
> - Mark LoadFromObject and StoreToObject as non-allocating
> - Use optimizable BitcastTaggedSignedToWord in TaggedIsNotSmi check
> 
> R=​jarin@chromium.org, tebbi@chromium.org
> 
> Change-Id: I42992d46597be795aee3702018f7efd93fcc6ebf
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1657926
> Commit-Queue: Georg Schmid <gsps@google.com>
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#62173}

TBR=jarin@chromium.org,tebbi@chromium.org,gsps@google.com

Change-Id: I0a1c0515a8a61d32f77a392f1efc0751b6aae2a1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1660485Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62179}