remove duplicate filtering

src/main/java/ch/zhaw/gartenverwaltung/io/JsonTaskList.java

@@ -90,9 +90,7 @@ public class JsonTaskList implements TaskList {
         List<Task> temptasks = taskMap.values().stream().
                 filter(task -> { return task.getCropId() == cropId;}).toList();
         for (Task task : temptasks ) {
-            if (task.getCropId() == cropId) {
                 taskMap.remove(task.getId());
-            }
         }
         writeTaskListToFile();
     }