jquery-tabby is never used

If used, .tabby() should be called on some jquery expression,
but 'tabby' substring is never to be found in the code.

Maybe it was used in past, but now CodeMirror takes care of Tab fine.

bower.json

@@ -13,7 +13,6 @@
     "jquery": ">=1.7.0",
     "jquery-ui": ">=1.9.2",
     "bootstrap2.3.2": "~2.3.2",
-    "jquery-tabby": "git://github.com/alanhogan/Tabby",
     "codemirror": "~3.24.0",
     "showdown": "~0.3.1"
   }

jquery-tabby.amd.json

@@ -1,10 +0,0 @@
-{
-    "paths": {
-        "amber_lib/jquery-tabby": "."
-    },
-    "shim": {
-        "amber_lib/jquery-tabby/jquery.textarea": {
-            "deps": [ "jquery" ]
-        }
-    }
-}

set.js

@@ -4,7 +4,6 @@ define([
 	'amber/lang',
 	'amber/codemirror',
     'jquery-ui',
-    'amber_lib/jquery-tabby/jquery.textarea',
     'amber_core/IDE',
     'amber_core/Examples',
     'amber_core/Benchfib',