Revert temporary workarounds for rustc 1.59 issues on s390x

This reverts commit dc312913f3.

rust-clap_derive.spec

@@ -69,23 +69,15 @@ use the "debug" feature of the "%{crate}" crate.
 %cargo_generate_buildrequires
 
 %build
-%ifnarch s390x
-# * temporary workaround for rustc 1.59 issues on s390x
-#   https://bugzilla.redhat.com/show_bug.cgi?id=2058803
 %cargo_build
-%endif
 
 %install
 %cargo_install
 
 %if %{with check}
 %check
-%ifnarch s390x
-# * temporary workaround for rustc 1.59 issues on s390x
-#   https://bugzilla.redhat.com/show_bug.cgi?id=2058803
 %cargo_test
 %endif
-%endif
 
 %changelog
 %autochangelog