Remove useless config keys;

Author: huacnlee

config/config.yml.default

@@ -15,16 +15,9 @@ defaults: &defaults
   faye_server: "http://127.0.0.1:8080/faye"
   faye_client_url: "http://127.0.0.1:8080/faye"
   faye_token: "123456"
-  twitter_token: "uJ9fBa53SmqrHBqs1qq5cg"
-  twitter_secret: "b9e9hbsa9sYYCqmW0kTyfALshclmkQX4kzTm8BBBTw"
   github_token: "207bd3415f6f42bcf8da"
   github_secret: "8d51636e1325cd4a0af78efe567a35f29d42096d"
-  douban_token: "04fab3198986e6350ef0194c9c94b29f"
-  douban_secret: "5c08eac53cfa1890"
-  google_js_api_key: "ABQIAAAAC-ble-vmy_g7-Qvem5P86xTX2XchcwgyHzp4Xo0DHRAzt2aLjhQnflwIyCJBOWYCE_rFuUkE0qEmhw"
   google_custom_search_id: "016658237367474087615:WMX464284035"
-  external_feed_url: "http://ruby-taiwan.org/topics/feed"
-  external_feed_name: "Ruby Taiwan Group"
   twitter_id: "ruby_china"
   gravatar_proxy: "http://gravatar.com"
 

config/initializers/devise.rb

@@ -183,8 +183,6 @@ module SSL
   # should add them to the navigational formats lists. Default is [:html]
   # config.navigational_formats = [:html, :iphone]
   config.omniauth :github, Setting.github_token, Setting.github_secret
-  # config.omniauth :twitter, Setting.twitter_token, Setting.twitter_secret
-  # config.omniauth :douban, Setting.douban_token, Setting.douban_secret
   # config.omniauth :open_id, :store => OpenID::Store::Filesystem.new('/tmp'), :name => 'google', :identifier => 'https://www.google.com/accounts/o8/id', :require => 'omniauth-openid'
 
   # ==> Warden configuration