No "running the following control files" message when none being run

BUG=None
TEST=Run a suite with run_remote_tests.sh, no longer see confusing and
useless "Running the following control files ${FLAGS_iterations} times:"
message.

Change-Id: Ibde09d8c3128e216336d322d2185524efca850fc
Reviewed-on: https://gerrit.chromium.org/gerrit/45793
Tested-by: Aviv Keshet <akeshet@chromium.org>
Reviewed-by: Chris Sosa <sosa@chromium.org>
Commit-Queue: Aviv Keshet <akeshet@chromium.org>
1 file changed