Remove requires from webrick server; they were causing dispatcher.rb to be double loaded.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4688 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

railties/lib/webrick_server.rb

@@ -60,10 +60,7 @@ def self.dispatch(options = {})
     server.mount('/', DispatchServlet, options)
 
     trap("INT") { server.shutdown }
-
-    require File.join(@server_options[:server_root], "..", "config", "environment") unless defined?(RAILS_ROOT)
-    require "dispatcher"
-
+    
     server.start
   end