[Needs migration path] Remove the "Node system" component; it is redundant with node.module

I've looked at many node issues today and a lot of them were doing the opposite (moving from node.module to node system) so it seems that decision was made and we no longer have a node.module component.

Actually the real history of this was that there were more issues in node system than node.module</cod> so we moved them to <code>node system thinking that would be the easier change, only to find out that components are still just field values (not references) on project nodes, so renaming them on the project node doesn't actually rename them but rather breaks all references to them. We decided it wasn't worth bothering the DA with a bulk update at that point. Good times!