feat: replace overly complex and unnecessary form choice loader for rooms

tests/Form/Service/ParticipantFieldOptionsProviderBabyTest.php

@@ -10,7 +10,6 @@ use App\BusProNet\Model\Travel;
 use App\BusProNet\Utility\DirectionMapper;
 use App\Form\Model\BookingDto;
 use App\Form\Model\ParticipantDto;
-use App\Form\Service\Factory\ParticipantRoomChoiceLoaderFactory;
 use App\Form\Service\ParticipantFieldOptionsProvider;
 use App\Service\BookingPriceCalculatorService;
 use App\Service\InsuranceService;
@@ -24,13 +23,11 @@ class ParticipantFieldOptionsProviderBabyTest extends TestCase
 
     protected function setUp(): void
     {
-        $roomChoiceLoaderFactory = $this->createMock(ParticipantRoomChoiceLoaderFactory::class);
         $this->serviceAvailabilityCalculator = $this->createMock(ServiceAvailabilityCalculator::class);
         $insuranceService = $this->createMock(InsuranceService::class);
         $priceCalculatorService = $this->createMock(BookingPriceCalculatorService::class);
 
         $this->provider = new ParticipantFieldOptionsProvider(
-            $roomChoiceLoaderFactory,
             $this->serviceAvailabilityCalculator,
             $insuranceService,
             $priceCalculatorService