bpo-35202: Remove unused imports in idlelib (GH-10438)

diff --git a/Lib/idlelib/codecontext.py b/Lib/idlelib/codecontext.py
index 7c88a4d..ef88528 100644
--- a/Lib/idlelib/codecontext.py
+++ b/Lib/idlelib/codecontext.py
@@ -13,7 +13,7 @@
 from sys import maxsize as INFINITY
 
 import tkinter
-from tkinter.constants import TOP, LEFT, X, W, SUNKEN
+from tkinter.constants import TOP, X, SUNKEN
 
 from idlelib.config import idleConf