Clean up updateState()

  1. It's to set preference always even no available Bluetooth device.
  2. Remove redundant code in if (numDevices == 0) {...} condition.

Bug: 123000252
Test: make -j56 RunSettingsRoboTests ROBOTEST_FILTER=MediaOutputPreferenceControllerTest
Change-Id: I9061428375f6097fde60498bf19eae2edafa5959
1 file changed