Revert "Enable Google One offer banner by default"

This reverts commit 1278fdb1bcb1018dd5ac4b0b809c92e93d019fcb.

Reason for revert: It was early to enable it by default.

Original change's description:
> Enable Google One offer banner by default
>
> - Refer a linked bug for details on conditions of enabled by default
>   cases.
>
> Bug: b:308692056
> Fixed: b:308692056
> Test: browser_tests --gtest_filter=*LoggedInUserFilesAppBrowserTest*
> Change-Id: I574df68ba9debb1fc7829879e0f16e0a57c9668c
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5008055
> Commit-Queue: Yuki Awano <yawano@google.com>
> Reviewed-by: Jeremie Boulic <jboulic@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1221759}

Bug: b:308692056
Change-Id: I28be3d00108f87a096066989671d76048d149080
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5015655
Auto-Submit: Yuki Awano <yawano@google.com>
Commit-Queue: Jeremie Boulic <jboulic@chromium.org>
Reviewed-by: Jeremie Boulic <jboulic@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1222029}