Update openra.spec

build server seems to have an old version of rpmbuild which does not understand soft-dependencies

Author: Mailaender

packaging/linux/rpm/openra.spec

@@ -10,7 +10,6 @@ URL: http://open-ra.org
 Group: Amusements/Games
 Packager: Matthew Bowra-Dean <[email protected]>
 Requires: mono-core mono-devel SDL openal
-Suggests: Cg
 Prefix: /usr
 Source: %{name}-%{version}.tar.gz
 Buildroot: /tmp/openra