idlelib: remove unused names and imports (one is a duplicate import).
diff --git a/Lib/idlelib/SearchDialog.py b/Lib/idlelib/SearchDialog.py
index 2aadb84..043168a 100644
--- a/Lib/idlelib/SearchDialog.py
+++ b/Lib/idlelib/SearchDialog.py
@@ -23,7 +23,7 @@
 class SearchDialog(SearchDialogBase):
 
     def create_widgets(self):
-        f = SearchDialogBase.create_widgets(self)
+        SearchDialogBase.create_widgets(self)
         self.make_button("Find Next", self.default_command, 1)
 
     def default_command(self, event=None):