LiveDisplayService: Disable ColorTemperature when NightDisplay is available

 * Having decided to use AOSP's night display feature in favor
   of our equivalent implementation, then we should take care of getting
   the latter completely disabled. Not only it can happen that a user was
   likely using it and enabling night display will now cause color
   transformation matrices to be applied twice, but also because there
   are resources being used for nothing.

Change-Id: I4ba7f643bf9e3d3b9bda17102b41668644e22ba1