Deleting the WallpaperPicker code inside launcher.
Instead linking it to the packages/apps/WallpaperPicker project

Change-Id: Ib6830b180a22c22afece01e0a4f6e94e89d6452b
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 40aaf79..06810b4 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -113,10 +113,10 @@
 import com.android.launcher3.util.TestingUtils;
 import com.android.launcher3.util.Thunk;
 import com.android.launcher3.util.ViewOnDrawExecutor;
-import com.android.launcher3.util.WallpaperUtils;
 import com.android.launcher3.widget.PendingAddWidgetInfo;
 import com.android.launcher3.widget.WidgetHostViewLoader;
 import com.android.launcher3.widget.WidgetsContainerView;
+import com.android.wallpaperpicker.WallpaperUtils;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;