total, remaining, nodeInfo, and resizeInfo are no longer going to be used - and were never wired to real information from the Fleetshard side. These fields can be removed from the agent-clusters endpoints. We also have to remove the initial implementation and the associated tests which was based on the usage of these fields. 

This work has to be done in coordination with https://issues.redhat.com/browse/MGDSTRM-8638