Avoiding writing the Metadata in the backup if nothing was changed in the backup

Change-Id: I4608ab5511b01f0d0018596d68e4341635649f73
diff --git a/src/com/android/launcher3/LauncherBackupAgentHelper.java b/src/com/android/launcher3/LauncherBackupAgentHelper.java
index 3d7d3f2..ddfd70d 100644
--- a/src/com/android/launcher3/LauncherBackupAgentHelper.java
+++ b/src/com/android/launcher3/LauncherBackupAgentHelper.java
@@ -32,7 +32,7 @@
 
     private static final String LAUNCHER_DATA_PREFIX = "L";
 
-    static final boolean VERBOSE = true;
+    static final boolean VERBOSE = false;
     static final boolean DEBUG = false;
 
     private static BackupManager sBackupManager;