some cleanup as-per phpstan

app/Services/ImportExport/AircraftExporter.php

@@ -29,7 +29,7 @@ class AircraftExporter extends ImportExport
      * @param Aircraft $aircraft
      * @return array
      */
-    public function export(Aircraft $aircraft): array
+    public function export($aircraft): array
     {
         $ret = [];
         foreach(self::$columns as $column) {

app/Services/ImportExport/AirportExporter.php

@@ -27,7 +27,7 @@ class AirportExporter extends ImportExport
      * @param Airport $airport
      * @return array
      */
-    public function export(Airport $airport): array
+    public function export($airport): array
     {
         $ret = [];
         foreach(self::$columns as $column) {

app/Services/ImportExport/ExpenseExporter.php

@@ -30,7 +30,7 @@ class ExpenseExporter extends ImportExport
      * @param Expense $expense
      * @return array
      */
-    public function export(Expense $expense): array
+    public function export($expense): array
     {
         $ret = [];
 

app/Services/ImportExport/FareExporter.php

@@ -27,7 +27,7 @@ class FareExporter extends ImportExport
      * @param Fare $fare
      * @return array
      */
-    public function export(Fare $fare): array
+    public function export($fare): array
     {
         $ret = [];
         foreach(self::$columns as $column) {

app/Services/ImportExport/FlightExporter.php

@@ -28,7 +28,7 @@ class FlightExporter extends ImportExport
      * @param Flight $flight
      * @return array
      */
-    public function export(Flight $flight): array
+    public function export($flight): array
     {
         $ret = [];
         foreach(self::$columns as $column) {

app/Services/ImportExport/SubfleetExporter.php

@@ -29,7 +29,7 @@ class SubfleetExporter extends ImportExport
      * @param Subfleet $subfleet
      * @return array
      */
-    public function export(Subfleet $subfleet): array
+    public function export($subfleet): array
     {
         $ret = [];
         foreach(self::$columns as $column) {