Window Install: Tidy up for Wix V3
Window Install: Tidy up for Wix V3

Remove now optional attributes in <RegistryKey>

Change-Id: I1be890072e5b2cb8279d8fe02f473b095d5a180f

madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal