Remove preliminary abstract
Remove preliminary abstract

clojureD-conference/clojureD-conference.github.io,clojureD-conference/clojureD-conference.github.io,doctronic/clojureD-conference.github.io,clojureD-conference/clojureD-conference.github.io,doctronic/clojureD-conference.github.io,clojureD-conference/clojureD-conference.github.io,doctronic/clojureD-conference.github.io,doctronic/clojureD-conference.github.io