Update comments to reflect what we're doing

Author: hyperthunk

src/Control/Distributed/Process/Node.hs

@@ -330,15 +330,11 @@ registryMonitorAgentId = MxAgentId "service.registry.monitoring"
 
 -- note [registry monitoring agent]
 -- this agent listens for 'MxRegistered' and 'MxUnRegistered' events and tracks
--- all remote 'ProcessId's that are stored in the registry.
+-- all labels for remote 'ProcessId's that are stored in the registry.
 --
 -- When a remote process is registered, the agent starts monitoring it until it
 -- is unregistered or the monitor notification arrives.
 --
--- The agent keeps the amount of labels associated with each registered remote
--- process. This is necessary so the process is unmonitored only when it has
--- been unregistered from all of the labels.
---
 
 registryMonitorAgent :: Process ProcessId
 registryMonitorAgent = do