Revert "Notify server side component about clicks in form layout (#6346)."

This reverts commit 23bdb6e90d970bd4e9ef11c79c095e65b6963414.

The included test (FormLayoutClickListenerTest) fails on all other browsers except PhantomJS.

Change-Id: Ib60d051da9100eef8f30e6578ac73314bcda3ec3