How to remove an Instance in SharePlex Manager. (4255980)

On the left Navigation pane under Homes, click on SharePlex Manager.
In the next window click on Administration (top left of the right pane).
In the next window click on Manage Monitoring.
In the next window click on Instances (left top corner).
Under SharePlex Instances select the Instance you wish to delete by clicking it.
Remove the Instance by clicking on the Remove button (top centre).

You also need to remove the Stream, otherwise alarms will keep firing.
Click on Streams (left top corner).
Under SharePlex Streams select the Stream you wish to delete by clicking it.
Remove the Stream by clicking on the Remove button (top centre).