hal_adpater: remove vendor tag support in arc_camera3.mojom

We don't support vendor tags in ARC++ camera HAL v3 so we don't need to
support vendor tags in the Mojo inferface.

BUG=b:32690003
TEST=None

Change-Id: I404334e3f764bc5a5ed0260264697a6c1b1264cc
Reviewed-on: https://chromium-review.googlesource.com/536556
Commit-Ready: Ricky Liang <jcliang@chromium.org>
Tested-by: Ricky Liang <jcliang@chromium.org>
Reviewed-by: Heng-ruey Hsu <henryhsu@google.com>
2 files changed