Return arch hack back

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

rust-packaging.spec

@@ -1,4 +1,6 @@
 %bcond_without check
+# https://pagure.io/koji/issue/659
+%global debug_package %{nil}
 
 Name:           rust-packaging
 Version:        11
@@ -9,8 +11,7 @@ License:        MIT
 URL:            https://pagure.io/fedora-rust/rust2rpm
 Source:         https://releases.pagure.org/fedora-rust/rust2rpm/rust2rpm-%{version}.tar.xz
 
-BuildArch:      noarch
+ExclusiveArch:  %{rust_arches}
-ExclusiveArch:  %{rust_arches} noarch
 
 # gawk is needed for stripping dev-deps in macro
 Requires:       gawk