test: Remove test scripts bashisms.

They now all work under a POSIX compliant sh. Specifically, 'dash' can
now be used for running "make check" tests.

Note that none of these scripts has ever been using a pipe, so
`set -o pipefail` is unnecessary and removed.

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/options.cn b/tests/options.cn
index 2f592e9..5af60ea 100755
--- a/tests/options.cn
+++ b/tests/options.cn
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # Test that flex handles the grouped noop options -c and -n properly.