Remove outdated note from README

Author: sorah

README.md

@@ -1,10 +1,7 @@
 # rubykaigi.org router
 
-
 what: rko-router uses https://github.com/ryandotsmith/nginx-buildpack to build nginx on heroku.
 
-notes: the specs exercises against real http server to verify current behaviour on the net.
-
 ## Test
 
 Test against production: