Remove dead condition-editing code

The frontend condition create/edit path was never wired (no caller, no UI).
Conditions stay live where used: the SurveyFlowService reads tl_survey_condition
for jumps, the editor shows the read-only overview, and delete still works.

Removed:
- SurveyConditionEditorType (zero references)
- SurveyEditorService::saveCondition() + its SurveyConditionData import
- SurveyConditionData form model
- SurveyConditionRepository::update() (only caller was saveCondition)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/Service/SurveyEditorService.php

@@ -5,7 +5,6 @@ declare(strict_types=1);
 namespace Mummert\SurveyBundle\Service;
 
 use Doctrine\DBAL\Connection;
-use Mummert\SurveyBundle\Form\Model\SurveyConditionData;
 use Mummert\SurveyBundle\Form\Model\SurveyEditorData;
 use Mummert\SurveyBundle\Form\Model\SurveyQuestionData;
 use Mummert\SurveyBundle\Model\SurveyContentModel;
@@ -220,27 +219,6 @@ final class SurveyEditorService
         });
     }
 
-    public function saveCondition(SurveyModel $survey, SurveyConditionData $data, int $conditionId = 0): void
-    {
-        $this->assertUnlocked($survey);
-
-        if ($conditionId > 0) {
-            $condition = $this->surveyConditionRepository->findById($conditionId);
-
-            if (null === $condition || (int) $condition->pid !== (int) $survey->id) {
-                throw new \RuntimeException('Die Bedingung wurde nicht gefunden.');
-            }
-
-            $this->surveyConditionRepository->update($condition, $data->toArray());
-            $this->surveyRepository->touch((int) $survey->id);
-
-            return;
-        }
-
-        $this->surveyConditionRepository->create((int) $survey->id, $data->toArray());
-        $this->surveyRepository->touch((int) $survey->id);
-    }
-
     public function deleteCondition(SurveyModel $survey, int $conditionId): void
     {
         $this->assertUnlocked($survey);