[CI] Drop test config workaround in standalone jobs

devstack seems to honor local.conf's test-config
properly now, and this workaround is no longer
necessary.

Change-Id: I4f52a9f2a7a2ca12083c47766615ec2e8fdd4a49
Signed-off-by: Goutham Pacha Ravi <gouthampravi@gmail.com>
4 files changed