Remove acme from CI test_packages (#19841)

Of course, forgetting to add it, I forgot to remove it...

Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>

.github/scripts/generate-test-package-lists.sh

@@ -77,7 +77,6 @@ test_packages[5]+=" $base/vault/external_tests/sealmigration"
 if [ "${ENTERPRISE:+x}" == "x" ] ; then
     test_packages[5]+=" $base/vault/external_tests/transform"
 fi
-test_packages[5]+=" $base/builtin/logical/pki/acme"
 
 # Total time: 588
 test_packages[6]+=" $base"