Remove references to twitter

readme.md

@@ -25,7 +25,6 @@ Some example use cases are to [check spelling][retext-spell],
 [make sure text is readable][retext-readability].
 
 * for more about us, see [`unifiedjs.com`][site]
-* for updates, see [Twitter][]
 * for questions, see [support][]
 * to help, see [contribute][] or [sponsor][] below
 
@@ -345,8 +344,6 @@ Support this effort and give back by sponsoring on [OpenCollective][collective]!
 
 [typescript]: https://www.typescriptlang.org
 
-[twitter]: https://twitter.com/unifiedjs
-
 [site]: https://unifiedjs.com
 
 [topic]: https://github.com/topics/retext-plugin