Actually remove log-ex. Commented out in last release.

src/re_frame/middleware.cljs

@@ -36,28 +36,6 @@
             (reset! app-db new-db)))))))
 
 
-;; no longer needed
-
-#_(defn log-ex
-  "Middleware which catches and prints any handler-generated exceptions to console.
-  Handlers are called from within a core.async go-loop, and core.async produces
-  a special kind of hell when in comes to stacktraces. By the time an exception
-  has passed through a go-loop its stack is mangled beyond repair and you'll
-  have no idea where the exception was thrown.
-  So this middleware catches and prints to stacktrace before the core.async sausage
-  machine has done its work.
-  "
-  [handler]
-  (fn log-ex-handler
-    [db v]
-    (warn "re-frame: use of \"log-ex\" is deprecated. You don't need it any more IF YOU ARE USING CHROME 44. Chrome now seems to now produce good stack traces.")
-    (try
-      (handler db v)
-      (catch :default e     ;; ooops, handler threw
-        (do
-          (.error js/console (.-stack e))
-          (throw e))))))
-
 
 (defn debug
   "Middleware which logs debug information to js/console for each event.