chromeos-installer: Remove from SDK dependency

There is technically nothing in the update_engine that needs
chromeos-installer package for SDK.

This allows us to remove the dependency to chromeos-installer in the SDK
since update_engine exists in the SDK.

Also remove some USE flags that chromeos-installer is not using.

BUG=b:171829801
TEST=sudo emerge update_engine
TEST=emerge-reef update_engine
TEST=CQ passes

Change-Id: I0b47d6de75187858eeeba6269a5cd4cd5cbc96a6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2594435
Tested-by: Amin Hassani <ahassani@chromium.org>
Commit-Queue: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
5 files changed