This reverts commit f621be44.

Reason for revert: breaks ChromeOS and iOS builds

Original change's description:
> Generate a LICENSE file as part of the updater build.
>
> Does not package it with the updater yet.
>
> Bug: 366254439
> Change-Id: I988cc195e4440c8f9014cc1639c2a25995bcdf31
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5941950


> Reviewed-by: Noah Rose Ledesma <noahrose@google.com>
> Commit-Queue: Adam Norberg <norberg@google.com>
> Cr-Commit-Position: refs/heads/main@{#1370857}

Bug: 366254439,374644634
Change-Id: I459df37c1e17e171055c4c536a7226243ca3438a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5947174


Owners-Override: Srinivas Sista <srinivassista@chromium.org>
Reviewed-by: Srinivas Sista <srinivassista@chromium.org>
Cr-Commit-Position: refs/branch-heads/6790@{#4}
Cr-Branched-From: 6e3c17c2-refs/heads/main@{#1371324}