--- a/hgext/show.py	Wed Oct 18 14:55:39 2017 -0700
+++ b/hgext/show.py	Wed Oct 18 15:05:03 2017 -0700
@@ -52,12 +52,6 @@
 cmdtable = {}
 command = registrar.command(cmdtable)
 
-configtable = {}
-configitem = registrar.configitem(configtable)
-configitem('commands', 'show.aliasprefix',
-    default=list,
-)
-
 revsetpredicate = registrar.revsetpredicate()
 
 class showcmdfunc(registrar._funcregistrarbase):