subquery projects aren't removed

[joocer]

SELECT satellite_name FROM mission_reports

AFTER OPTIMIZATION
└─ EXIT
   └─ PROJECT [satellite_name]
      └─ PROJECT [satellite_name]
         └─ NESTED_INNER JOIN ($view-ba42.id = $view-a06f.planetId)
            ├─ READ ($satellites AS $view-a06f) [planetId, name]
            └─ READ ($planets AS $view-ba42) [id]