context: Remove an unused variable
context: Remove an unused variable

This trips a warning.

Closes: #100

Reviewed-by: Igor Gnatenko <71fb2d16c26f553767b965fdac40e83622cad277@redhat.com>

rpm-software-management/libdnf,Conan-Kudo/libhif,hughsie/libhif,rpm-software-management/libhif,edynox/libdnf,Conan-Kudo/libhif,Conan-Kudo/libhif,hughsie/libhif,rpm-software-management/libhif,rpm-software-management/libdnf,rpm-software-management/libdnf,rpm-software-management/libhif,rpm-software-management/libhif,edynox/libdnf,Conan-Kudo/libhif,hughsie/libhif,hughsie/libhif,edynox/libdnf,edynox/libdnf,rpm-software-management/libdnf