This reverts commit dde25872.

Reason for revert: GC-Stress failures https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux64%20GC%20Stress%20-%20custom%20snapshot/23168

Original change's description:
> [esnext] ship Object.fromEntries
> 
> Enable --harmony-object-from-entries by default.
> 
> Object.fromEntries is a new standard library method, whose proposal
> (https://tc39.github.io/proposal-object-from-entries/) is currently
> at stage 3.
> 
> It simply creates a JSObject from an iterable collection of key/value
> pairs, such that `Object.fromEntries([ [ "a", "b" ] ]) -> { a: "b" }`
> 
> BUG=v8:8021
> R=​gsathya@chromium.org, adamk@chromium.org
> 
> Change-Id: Ib55bb6ca43727d66b471c0fd14845735c1ca2894
> Reviewed-on: https://chromium-review.googlesource.com/c/1373918
> Commit-Queue: Caitlin Potter <caitp@igalia.com>
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#58262}

TBR=adamk@chromium.org,gsathya@chromium.org,caitp@igalia.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: v8:8021
Change-Id: Id9582e2710ee6b46be3fbac1cbafefd5c0151cd0
Reviewed-on: https://chromium-review.googlesource.com/c/1379871Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58265}