Update index.md

Author: tomchristie

docs/index.md

@@ -190,11 +190,6 @@ For support please see the [REST framework discussion group][group], try the  `#
 
 For priority support please sign up for a [professional or premium sponsorship plan](https://fund.django-rest-framework.org/topics/funding/).
 
-For updates on REST framework development, you may also want to follow [the author][twitter] on Twitter.
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 ## Security
 
 If you believe you’ve found something in Django REST framework which has security implications, please **do not raise the issue in a public forum**.