Remove --root=/ in install script

Installing with --root=/ put the files outside of the egg directory,
which is not desired.

Change-Id: I40142d1a67c0ee12814e08e7b2846bee0ce4e32e
Signed-off-by: Jeff Peeler <jpeeler@redhat.com>

install.sh

@@ -26,6 +26,6 @@ do
 done
 popd > /dev/null
 
-./setup.py install --root=/ >/dev/null
+./setup.py install >/dev/null
 rm -rf build heat.egg-info