We're deactivating the ClojureScript track

We’re deactivating the ClojureScript track as it is basically “just” a different compile target for Clojure.
The syntactic differences between Clojure and ClojureScript are very minor, therefore we don’t consider it to merit its own track.
We feel that deactivating this track is less confusing to students and can help focus efforts on the Clojure track.

Thanks to everyone who helped build this track!