remove twemoji, just pretend it never existed

README.md

@@ -69,8 +69,4 @@ yarn start
 ```
 
 ## Setup
-Visit `/` on the HTTP server to add an admin account.
-
-## Twemoji
-I use Twemoji in this project. Thanks Twitter!
-To use Twemoji, USE_CDN must be turned on (it is by default).
+Visit `/` on the HTTP server to add an admin account.

views/layout.pug

@@ -35,7 +35,4 @@ html(lang='en')
             else if title !== false
               h1 #{config.siteTitle}
           include includes/messages.pug
-          block content
-  if config.useCDN
-    script(src='https://twemoji.maxcdn.com/v/latest/twemoji.min.js', crossorigin='anonymous')
-    script twemoji.parse(document.body)
+          block content