Exclude subordinate units from the deployer bar summary counts.

The subordinate units were included in the counts for unplaced units to deploy in the deployer bar summary. This makes sure units which are from a subordinate service do not get counted.
I was thinking that but until we have an official word on weather subordinates should be placed I figured it best to leave it as is instead of potentially breaking other places in the codebase which rely on the current implementation of that method.