Remove UBFIX related to task destruction

src/battle_factory_screen.c

@@ -4220,17 +4220,12 @@ static void Task_OpenMonPic(u8 taskId)
             return;
         break;
     default:
-        #ifndef UBFIX
         DestroyTask(taskId);
-        #endif
-        // UB: Should not use the task after it has been deleted.
+        // Accessing data of destroyed task. Task data isn't reset until a new task needs that task id.
         if (gTasks[taskId].tIsSwapScreen == TRUE)
             Swap_CreateMonSprite();
         else
             Select_CreateMonSprite();
-        #ifdef UBFIX
-        DestroyTask(taskId);
-        #endif
         return;
     }
     task->tState++;