pkg: Remove node-config (and references to it)

node-config seems to be unused.

Change-Id: Ibc9015c3d36db9519e1182c10f921f3fada9802e
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=969143
Signed-off-by: Fabian Deutsch <fabiand@fedoraproject.org>