Revert "tools: Make unit tests non-fatal on Fedora s390x"
Revert "tools: Make unit tests non-fatal on Fedora s390x"

Fedora's s390x builders are real-iron now, not emulated any more. We now
also run s390x builds in packit on every PR, so this should not be a
surprise at release time any more.

This reverts commit be17f56442e5d053dd74017f4addc9dd9a4c94ed.

cockpit-project/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,martinpitt/cockpit,martinpitt/cockpit,mvollmer/cockpit,martinpitt/cockpit,mvollmer/cockpit,martinpitt/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,martinpitt/cockpit,mvollmer/cockpit,mvollmer/cockpit,mvollmer/cockpit