cloud-init:remove cloud-init blocking network targets

As cloud-init was blocking all the services that depend on
network-online and cos doesn't support configuring network,
removed network targets.

BUG=b/171348876
TEST=validation test
RELEASE_NOTE=cloud-init starts after network-online
because cloud-init does not configure network for COS on GCP.

Change-Id: I8f5ddb7da7494b68c7d04b8b6ff0312d463f6087
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/8283
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Reviewed-by: Roy Yang <royyang@google.com>
3 files changed