bpo-35202: Remove more unused imports in idlelib (GH-10573)

diff --git a/Lib/idlelib/idle_test/test_browser.py b/Lib/idlelib/idle_test/test_browser.py
index 905dc1f..dfbab6d 100644
--- a/Lib/idlelib/idle_test/test_browser.py
+++ b/Lib/idlelib/idle_test/test_browser.py
@@ -11,7 +11,6 @@
 import pyclbr
 from tkinter import Tk
 
-from idlelib import filelist
 from idlelib.tree import TreeNode
 
 
diff --git a/Lib/idlelib/idle_test/test_config_key.py b/Lib/idlelib/idle_test/test_config_key.py
index 5031daa..abe5749 100644
--- a/Lib/idlelib/idle_test/test_config_key.py
+++ b/Lib/idlelib/idle_test/test_config_key.py
@@ -5,7 +5,7 @@
 import unittest
 from tkinter import Tk
 from idlelib.idle_test.mock_idle import Func
-from idlelib.idle_test.mock_tk import Var, Mbox_func
+from idlelib.idle_test.mock_tk import Mbox_func
 
 
 class ValidationTest(unittest.TestCase):
diff --git a/Lib/idlelib/idle_test/test_configdialog.py b/Lib/idlelib/idle_test/test_configdialog.py
index dbfcd01..5472a04 100644
--- a/Lib/idlelib/idle_test/test_configdialog.py
+++ b/Lib/idlelib/idle_test/test_configdialog.py
@@ -8,7 +8,7 @@
 import unittest
 from unittest import mock
 from idlelib.idle_test.mock_idle import Func
-from tkinter import Tk, Frame, StringVar, IntVar, BooleanVar, DISABLED, NORMAL
+from tkinter import Tk, StringVar, IntVar, BooleanVar, DISABLED, NORMAL
 from idlelib import config
 from idlelib.configdialog import idleConf, changes, tracers
 
diff --git a/Lib/idlelib/idle_test/test_zoomheight.py b/Lib/idlelib/idle_test/test_zoomheight.py
index bac86ac..aa5bdfb 100644
--- a/Lib/idlelib/idle_test/test_zoomheight.py
+++ b/Lib/idlelib/idle_test/test_zoomheight.py
@@ -4,7 +4,7 @@
 from idlelib import zoomheight
 import unittest
 from test.support import requires
-from tkinter import Tk, Text
+from tkinter import Tk
 from idlelib.editor import EditorWindow