shares.kungfu.work causes long loadtime - how do i delete it from shopify theme

[cretangreen]

I can not see what app i have that loads from shares.kungfu.work

But the problem is that it takes over 10 sec to timeout, and i want to delete any use of it: https://shares.kungfu.work/app/css/share 

Any tips on how i can find that in my site, and then disable it?

kind regards

Jesper