Remove some search engines not available

_keysnail.js

@@ -93,14 +93,13 @@ plugins.options["search-url-list"] = [
   ["DuckDuckGo", "https://duckduckgo.com/?q=%q"],
   ["Bing", "http://bing.com/search?q=%q"],
   ["Google", "http://google.com/search?q=%q"],
-  ["yatwitter search", "http://yats-data.com/yats/search?query=%q"],
   ["Yahoo Realtime",
    "http://realtime.search.yahoo.co.jp/search?rkf=1&ei=UTF-8&p=%q"],
   ["Twitter Search", "http://twitter.com/search?q=%q&lang=all"],
   ["Tospy", "http://topsy.com/s?allow_lang=ja&q=%q"],
   ["2ch syoboi.jp", "http://ff2ch.syoboi.jp/?q=%q"],
   ["2ch-ranking","http://2ch-ranking.net/search.php?q=%q&imp=and&order=time"],
-  ["2ch ttsearch", "http://ttsearch.net/s2.cgi?k=%q&o=r"],
+  //["2ch ttsearch", "http://ttsearch.net/s2.cgi?k=%q&o=r"],
   ["I\'m feelig lucky!", "http://www.google.co.jp/search?q=%q&btnI=kudos"],
   ["Uncyclopedia", "http://ja.uncyclopedia.info/wiki/%q"],
   ["Wikipedia", "http://ja.wikipedia.org/wiki/%q"],