It's more funny than that.

They've also:

Decided to stop giving Palestine the taxes that they collect on their behalf (not that the Palestinians get a choice in this)
The USA has also stated that this act is not helpful and that they too might withdraw finding - as goign to courts to arbitrate things is Not the way that America does things when the outcome might be against it.

Also, note the complete lack of a scream of outrage from the EU (either separate countries or in total)... or anywhere else for that matter.