Revert "[PolicyLogs] Adding Flag for chrome://policy/logs on Desktop"

This reverts commit e4b5abaa.

Reason for revert: Need to be reverted with https://crrev.com/c/4532858, which caused MSAN failure

Original change's description:
> [PolicyLogs] Adding Flag for chrome://policy/logs on Desktop
>
> Feature: PolicyLogsPageDesktop
>
> Bug: b/282733597
> Change-Id: I8aeef1d8e21fd8bcaa9d6cd52dbe3ac4ecf056ee
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4558987


> Reviewed-by: Fabio Tirelo <ftirelo@chromium.org>
> Commit-Queue: Salma Elmahallawy <esalma@google.com>
> Cr-Commit-Position: refs/heads/main@{#1148264}

Bug: b/282733597
Change-Id: Iabba887dd8a955ae15634991d9ba94f8d1e8c6a6
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4560385
Auto-Submit: Jiewei Qian <qjw@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Jiewei Qian <qjw@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1148299}