[iOS] Remove deprecated APIs from ChromeIdentityInteractionManager.

Removes deprecated OAuth APIs from Identity.

Bug: 1098339
Change-Id: I1979b4651b6d2dcdff6bf6b40c1c71d9c8602928
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2283608
Reviewed-by: Jérôme Lebel <jlebel@chromium.org>
Commit-Queue: Nohemi Fernandez <fernandex@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#786740}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: abb390fba7407322744299e2a140e00112043622
2 files changed