Fix warnings and remove dead code

Change-Id: I574d823fedf4b752c3df5a72599b390f708823ac
diff --git a/src/com/android/launcher2/WallpaperChooser.java b/src/com/android/launcher2/WallpaperChooser.java
index 8a9d92f..77e1e6f 100644
--- a/src/com/android/launcher2/WallpaperChooser.java
+++ b/src/com/android/launcher2/WallpaperChooser.java
@@ -24,6 +24,7 @@
 import android.os.Bundle;
 
 public class WallpaperChooser extends Activity {
+    @SuppressWarnings("unused")
     private static final String TAG = "Launcher.WallpaperChooser";
 
     @Override