changeover to new keybinding configuration implementation
diff --git a/Lib/idlelib/ZoomHeight.py b/Lib/idlelib/ZoomHeight.py
index ecc306a..f2b99e9 100644
--- a/Lib/idlelib/ZoomHeight.py
+++ b/Lib/idlelib/ZoomHeight.py
@@ -10,14 +10,7 @@
             ('_Zoom Height', '<<zoom-height>>'),
          ])
     ]
-
-    windows_keydefs = {
-        '<<zoom-height>>': ['<Alt-F2>'],
-    }
-    unix_keydefs = {
-        '<<zoom-height>>': ['<Control-x><Control-z>'],
-    }
-
+ 
     def __init__(self, editwin):
         self.editwin = editwin