unreadable syntax page is out of date

[souenzzo]

The syntax unreadable page is out of date

• https://github.com/cljs/api/blob/master/docfiles/syntax/unreadable.md
• https://cljs.github.io/api/syntax/

Seems that the unreadable reader in clojure JVM is not a documented thing, like #=, and should not be used.

Maybe this page can be removed (!?)