Fixed default quest icon misaligned issue

- updated icon name to "notes"
- removed unused icon

Ticket: https://dev.azure.com/TDEI-UW/TDEI/_workitems/edit/2034/

Author: srikanth-vg

GoInfoGame/GoInfoGame/Assets.xcassets/Quests/other_element.imageset/Contents.json

@@ -27,7 +27,7 @@ class LongElementQuest: QuestBase, Quest {
             case "kerb":
                 return UIImage(named: "kerb_type")!
             default:
-                return UIImage(named: "other_element")!
+                return UIImage(named: "notes")!
             }
         }
     }