This is a follow-up to commit
0e08ad7f19
gnu: linux-libre-headers: Remove i586-gnu from supported-systems.
See also <https://issues.guix.gnu.org/65755>.
* tests/packages.scm ("package-transitive-supported-systems, implicit inputs"):
Filter expectiation with target-linux?, as %current-system is linux.
Co-authored-by: Ludovic Courtès <ludo@gnu.org>