Code cleanup from inspection results

app/Services/ImportExport/AircraftExporter.php

@@ -4,7 +4,6 @@ namespace App\Services\ImportExport;
 
 use App\Interfaces\ImportExport;
 use App\Models\Aircraft;
-use App\Models\Flight;
 
 /**
  * The flight importer can be imported or export. Operates on rows

app/Services/ImportExport/AircraftImporter.php

@@ -54,6 +54,7 @@ class AircraftImporter extends ImportExport
      * @param int   $index
      *
      * @return bool
+     * @throws \Exception
      */
     public function import(array $row, $index): bool
     {