ci-dockerfiles-sanity-check: Remove to recreate as a different job type

This job is currently a matrix job with a single configuration, which makes
its usage and maintenance a bit confusing. We can't just change the type of
existing job from matrix to normal ("freestyle") in Jenkins, so will remove
and then immediately recreate as such.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: Ie404e077ef4d9e8aff05ca227efe479faf822036
1 file changed