'ls.scm' monkey-patches (ice-9 getopt-long) to allow it to recognize '-1'
as a valid option.  Unfortunately, monkey patching no longer works with
Guile 3.0 due to inlining, so change the test to make do without '-1'.

diff --git a/tests/core-utils.org b/tests/core-utils.org
index d35ede8..22718e3 100644
--- a/tests/core-utils.org
+++ b/tests/core-utils.org
@@ -93,14 +93,11 @@
 * ls
 :script:
 #+begin_src sh
-  ls -1 tests/data/star
+  ls tests/data/star
 #+end_src
 :stdout:
 #+begin_example
-  0
-  1
-  2
-  3
+  0  1  2  3                                                                    
 #+end_example
 
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