Trivial cleanups following bpo-31370 (#3649)
* Trivial cleanups following bpo-31370
* Also cleanup the "importlib._bootstrap_external" module
diff --git a/Lib/test/test_idle.py b/Lib/test/test_idle.py
index b7ef70d..31fffd9 100644
--- a/Lib/test/test_idle.py
+++ b/Lib/test/test_idle.py
@@ -1,7 +1,7 @@
import unittest
from test.support import import_module
-# Skip test if _thread or _tkinter wasn't built, if idlelib is missing,
+# Skip test if _tkinter wasn't built, if idlelib is missing,
# or if tcl/tk is not the 8.5+ needed for ttk widgets.
tk = import_module('tkinter') # imports _tkinter
if tk.TkVersion < 8.5: