Revert "[Autofill Auth] Adding capability to disable WebAuthn UI from Autofill"

This reverts commit 69671ce55513fe27ab04917db7da0f234bf49ffa.

Reason for revert: Tested in Canary, and the flow stops immediately after authentication. Will try to debug this, and possibly just go ahead with the long term solution right away.

Original change's description:
> [Autofill Auth] Adding capability to disable WebAuthn UI from Autofill
> 
> Providing an option to disable WebAuthn UI from InternalAuthenticatorImpl.
> 
> By disabling WebAuthn UI, modal dialogs will stop conflicting between the two
> components and this will give Autofill full control over the user experience.
> 
> Bug: 949269
> Change-Id: Ibf88cdb0f014c022371546df54d10e2c9eb7bc24
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1948916
> Commit-Queue: Manas Verma <[email protected]>
> Reviewed-by: Martin Kreichgauer <[email protected]>
> Reviewed-by: Jared Saul <[email protected]>
> Reviewed-by: sebsg <[email protected]>
> Cr-Commit-Position: refs/heads/master@{#722230}

[email protected],[email protected],[email protected],[email protected]

(cherry picked from commit eeb29c7922f41c0211d29369b06e8f3811bb7bb7)

Change-Id: Iab4507114f3e19e59acddd49ea89244ee7390048
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1032165
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1955910
Reviewed-by: Manas Verma <[email protected]>
Commit-Queue: Manas Verma <[email protected]>
Cr-Original-Commit-Position: refs/heads/master@{#722571}
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1958893
Cr-Commit-Position: refs/branch-heads/3987@{#16}
Cr-Branched-From: c4e8da9871cc266be74481e212f3a5252972509d-refs/heads/master@{#722274}
3 files changed