msm7x30: Disable missing overlays for now

Change-Id: Ib7756a6537eb3538c06df110e950c8d5e530ea94
Revert "liblights: Add music light support"

This still does nothing and L doesn't have the needed commits for it to compile.

This reverts commit 628e0d9cf1246bbe6547083f73595021341fd1be.

Change-Id: Ia6fe3eb9a76ea04242637db42d2c0f91d5e84a66