Make an excluded committee node return a proper status response

[lmoe]

If you remove a node in a formed committee, the removed node does not seem to get notified about it. It still gives a response about being in the committee.

This can be "solved" by either restarting the node or be de/activating the chain it's running. So it might just be a caching issue of some sort.

The node should give a proper response back directly after being removed.