Remove the Kaapi and Simple backends
This removes the Kaapi and Simple backends, as they are no longer supported. OpenMP and TBB are the supported backends.
A GitLab update will be applied on April 24th, between 8am and 10am, EST (UTC-05:00). This site may have intermittent delays during that time.
This removes the Kaapi and Simple backends, as they are no longer supported. OpenMP and TBB are the supported backends.