Remove unused methods in auth_service

Bug: 425896213
Change-Id: I04a2450ce8e64fbfe1ce7293bb8c62ebcad292ee
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7251629
Reviewed-by: Alex Ilin <[email protected]>
Commit-Queue: Tanmoy Mollik <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1557350}
NOKEYCHECK=True
GitOrigin-RevId: 5d0ff9712e63bd50f4bda1f2d9772130fdbfce48
2 files changed