Rename 'Airlines' model to 'Airline'

database/factories/AircraftClassFactory.php

@@ -1,10 +0,0 @@
-<?php
-
-$factory->define(App\Models\AircraftClass::class, function (Faker\Generator $faker) {
-    return [
-        'id' => 1,
-        'code' => 'H',
-        'name' => 'Heavy',
-        'notes' => 'Heavy aircraft',
-    ];
-});

database/factories/FaresFactory.php

@@ -1,10 +0,0 @@
-<?php
-
-$factory->define(App\Models\Fare::class, function (Faker\Generator $faker) {
-    return [
-        'code' => 'Y',
-        'name' => 'Economy',
-        'price' => '100',
-        'capacity' => '200',
-    ];
-});

database/factories/FlightFactory.php

@@ -1,10 +0,0 @@
-<?php
-
-$factory->define(App\Models\Flight::class, function (Faker\Generator $faker) {
-    return [
-        'code' => 'Y',
-        'name' => 'Economy',
-        'price' => '100',
-        'capacity' => '200',
-    ];
-});