rchavik/croogo — comment on commit 87030a17bb160487afff15ce3c95b84d57ceb413
File:  line 0
By fahad19:

That was a good find by you. I remember using the plugin for meta fields, but over time the code for UUID generation may have moved to PHP instead of relying on JS.

I ran a quick search on my local copy, and couldn't find any usage for $().uuid(). I think it is safe to remove that plugin.