Remove layout option, adapt -t option accordingly

The layout option no longer makes much sense since config repos are
where layouts come from now. The -t option is still useful for testing
the static config, and may one day be expanded to fully load all config
repos and test them.

There were also chunks left in the scheduler from the old way.

Change-Id: I0a0b521b3ed20762e1cd60a042daa1f8c4f57a65
2 files changed