Revert "make sure we always have app config in enviroment configuration"

This reverts commit 23fb1b0a29.

lib/enviroment_configuration.rb

@@ -1,6 +1,5 @@
-require File.join(File.dirname(__FILE__), '..', 'app', 'models', 'app_config')
-
 module EnviromentConfiguration
+  ARRAY_SEPERATOR = '%|%'
   def self.heroku?
     ENV['HEROKU']
   end