diff --git a/lib/reline/io/ansi.rb b/lib/reline/io/ansi.rb
index 1d20719779..04ba68b82f 100644
--- a/lib/reline/io/ansi.rb
+++ b/lib/reline/io/ansi.rb
@@ -2,18 +2,6 @@
 require 'io/wait'
 
 class Reline::ANSI < Reline::IO
-  CAPNAME_KEY_BINDINGS = {
-    'khome' => :ed_move_to_beg,
-    'kend'  => :ed_move_to_end,
-    'kdch1' => :key_delete,
-    'kpp' => :ed_search_prev_history,
-    'knp' => :ed_search_next_history,
-    'kcuu1' => :ed_prev_history,
-    'kcud1' => :ed_next_history,
-    'kcuf1' => :ed_next_char,
-    'kcub1' => :ed_prev_char,
-  }
-
   ANSI_CURSOR_KEY_BINDINGS = {
     # Up
     'A' => [:ed_prev_history, {}],