Screen support has been completely removed from devstack.
So we don't need anymore
[1] the change id of I8c27182f60b0f5310b3a8bf5feb02beb7ffbb26a
the change set of cdba1b371628aa0e8bc5b687351c5ee9b39e9bc6
Change-Id: Id0b5243746aaf519d2f7e887bdbfe9d0a9e78c2f
753 B
753 B