This reverts commit f2ea42d6.

Reason for revert: Makes UBSan unhappy: https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20UBSan/10634

Original change's description:
> [wasm-debug-eval] Implement additional evaluator API methods
> 
> This CL implements the __getLocal and __sbrk APIs of the evaluator
> interface.  Also includes a drive-by fix of the imports' module: put
> them on the "env" module.
> 
> Change-Id: Ie16d1b1cf924b88734eda184d1ce98d52f32f828
> Bug: chromium:1020120
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2132786
> Commit-Queue: Philip Pfaffe <pfaffe@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#67122}

TBR=jkummerow@chromium.org,pfaffe@chromium.org

Change-Id: I23b078d37971e083c08c9b83994bbf38ac13f103
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:1020120
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2148787Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67124}