Cleanup TwilightService

TwilightService now just reports the current twilight state, it's up to
clients to provide their own locking mechanism (e.g. always day or
night).

Bug: 29620105
Change-Id: I2a8bb544eab0f44d269c59f36a53fbdf842b423a
diff --git a/services/core/java/com/android/server/twilight/TwilightState.java b/services/core/java/com/android/server/twilight/TwilightState.java
index 81abc13..dec053b 100644
--- a/services/core/java/com/android/server/twilight/TwilightState.java
+++ b/services/core/java/com/android/server/twilight/TwilightState.java
@@ -24,6 +24,7 @@
  * This object is immutable.
  */
 public class TwilightState {
+
     private final boolean mIsNight;
     private final float mAmount;