Revert "Added UX team to StoryBoard"

This caused at least the following problems:

* A repo was created in cgit http://git.openstack.org/cgit/stackforge/ux/
* Nodepool image builds failed because they tried to cache it

This reverts commit 315bf31c624c71126f85aed29b151ece94283df2.

Change-Id: Ia2a636053493ce0cf0c48348f18f0794aea0bf86