Do this, "select id, name from COND" in the repo. Look for tables in the schema for the ones you want to remove that end in the ID pulled from COND.
An example would be I get "12, PROD-123\NODE1" as output from the select against COND. I'd go look for any tables with an %_12.
If they don't exist, the objects have been cleaned up and I could then just delete from COND where id = 12.
CAUTION: only remove if the corresponding tables don't exist!
That should remove them from the UI.