feat: remove deprecated booking service alias

src/Service/BookingService.php

@@ -232,14 +232,6 @@ class BookingService
         }
     }
 
-    /**
-     * @deprecated Use preselectDefaultServices() instead.
-     */
-    public function preselectMandatoryServices(BookingDto $bookingDto): void
-    {
-        $this->preselectDefaultServices($bookingDto);
-    }
-
     private function canPreselectServicesForParticipant(
         BookingDto $bookingDto,
         int $participantIndex,
@@ -649,15 +641,4 @@ class BookingService
         $bookingDto->bookingStatus = $this->bookingStatusRuleRegistry->evaluateStatus($bookingDto);
     }
 
-    /**
-     * Ensures the booking DTO has the correct number of participant objects.
-     *
-     * Creates or removes ParticipantDto objects based on room selections.
-     * Preserves existing participant data when adjusting the count.
-     * Optionally prepopulates the applicant (index 0) from an authenticated user.
-     *
-     * @param BookingDto                                               $bookingDto          The booking DTO to update
-     * @param \Symfony\Component\Security\Core\User\UserInterface|null $user                Optional authenticated user for prepopulation
-     * @param callable|null                                            $prepopulateCallback Callback to prepopulate applicant: fn(UserInterface, ParticipantDto): ParticipantDto
-     */
 }