Fix warnings and remove dead code

Change-Id: I574d823fedf4b752c3df5a72599b390f708823ac
diff --git a/src/com/android/launcher2/Hotseat.java b/src/com/android/launcher2/Hotseat.java
index fbb45b9..a6c9fb2 100644
--- a/src/com/android/launcher2/Hotseat.java
+++ b/src/com/android/launcher2/Hotseat.java
@@ -28,6 +28,7 @@
 import com.android.launcher.R;
 
 public class Hotseat extends FrameLayout {
+    @SuppressWarnings("unused")
     private static final String TAG = "Hotseat";
 
     private Launcher mLauncher;