Do not back up/restore the "pulse LED for notifications" setting

Bug 24103790

Change-Id: I69a6a85e5282f9ca50fc2655bda4695757b92e74
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index 2053dbe..1822067 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -3283,7 +3283,6 @@
             DOCK_SOUNDS_ENABLED,        // moved to global
             LOCKSCREEN_SOUNDS_ENABLED,
             SHOW_WEB_SUGGESTIONS,
-            NOTIFICATION_LIGHT_PULSE,
             SIP_CALL_OPTIONS,
             SIP_RECEIVE_CALLS,
             POINTER_SPEED,