Clean up unused code and import declarations

Change-Id: If36fd2d99a51b07290b13f697b3ea08d31feb023
diff --git a/src/com/android/launcher2/WallpaperChooserDialogFragment.java b/src/com/android/launcher2/WallpaperChooserDialogFragment.java
index 6e39da2..7c4ac2e 100644
--- a/src/com/android/launcher2/WallpaperChooserDialogFragment.java
+++ b/src/com/android/launcher2/WallpaperChooserDialogFragment.java
@@ -16,7 +16,6 @@
 package com.android.launcher2;
 
 import android.app.Activity;
-import android.app.AlertDialog;
 import android.app.Dialog;
 import android.app.DialogFragment;
 import android.app.WallpaperManager;
@@ -27,20 +26,17 @@
 import android.graphics.BitmapFactory;
 import android.graphics.Canvas;
 import android.graphics.ColorFilter;
-import android.graphics.Paint;
 import android.graphics.drawable.Drawable;
 import android.os.AsyncTask;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
-import android.view.ViewGroup;
 import android.view.View.OnClickListener;
+import android.view.ViewGroup;
 import android.widget.AdapterView;
 import android.widget.BaseAdapter;
-import android.widget.FrameLayout;
 import android.widget.Gallery;
-import android.widget.GridView;
 import android.widget.ImageView;
 import android.widget.ListAdapter;
 import android.widget.SpinnerAdapter;