Remove assets/js/share-event.js

Moved this completely to bbaovanc.com repo. I think it was here as a
placeholder purely because of some issue with global resources not
working in the past. It seems like it maybe works fine now though.

assets/js/share-event.js

@@ -1,3 +0,0 @@
-function share_event(service) {
-    // this function does nothing by default
-}