remove the special case for md5sum.pl

Author: sylvestre

util/build-gnu.sh

@@ -356,9 +356,6 @@ echo "n_stat1 = \$n_stat1"\n\
 echo "n_stat2 = \$n_stat2"\n\
 test \$n_stat1 -ge \$n_stat2 \\' tests/ls/stat-free-color.sh
 
-# no need to replicate this output with hashsum
-sed -i -e  "s|Try 'md5sum --help' for more information.\\\n||" tests/cksum/md5sum.pl
-
 # Our ls command always outputs ANSI color codes prepended with a zero. However,
 # in the case of GNU, it seems inconsistent. Nevertheless, it looks like it
 # doesn't matter whether we prepend a zero or not.