Mark this package as self-destruct
With libsolv 0.7.8+, this will make Obsoletes to take an effect, but it
won't actually install this package.
With older libsolv versions, this won't do anything.
References: https://github.com/openSUSE/libsolv/commit/25356d16b4520d716e64c8f9506ef4d00b343c63
Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>