Remove SSE

Removes a registered SSEController using its controller ID and channel name.
This ensures the client is unsubscribed from the specified channel, even if the controller exists on another server.

Config

• Controller Id
  The ID of the SSEController to remove.
  If the controller exists on the current server, it will be removed directly.
  If it exists on another server, the request will be forwarded until the correct server removes it.

• Channel Name
  The name of the channel the controller is associated with.

• Publisher
  An instance of SSEPublisher, which should be created once globally to manage broadcasting events across multiple clients.