删除多余的调用

source/component/menubar.py

@@ -1,4 +1,3 @@
-import os
 import random
 import pygame as pg
 from .. import tool

source/component/plant.py

@@ -1,6 +1,5 @@
 import random
 import pygame as pg
-import os
 from .. import tool
 from .. import constants as c
 

source/component/zombie.py

@@ -1,5 +1,4 @@
 import pygame as pg
-import os
 import random
 from .. import tool
 from .. import constants as c

source/state/screen.py

@@ -1,5 +1,4 @@
 import pygame as pg
-import os
 from .. import tool
 from .. import constants as c