jf: remove deprecated overlay settings

* also disable perf and smart cover until they're implemented

Change-Id: Ia4917d2fa53de34cd3413e4cee11cd1780077fad
Enable configuration of notification LED color

Change-Id: Ibc1dfbb8a35a98deaee131f31e812e53c3f80c2e
Comment out overlays for now

Change-Id: I3515cb587fae7c45e9bd1813ce13a856e22d4d10