Removing support library dependency

> Removed FolderAutoScrollHelper as folders are currently not scrollable

Change-Id: I261f43a665b742697e3224e1e9852ccc526badcd
diff --git a/WallpaperPicker/AndroidManifest.xml b/WallpaperPicker/AndroidManifest.xml
index 5b6a007..cb1457b 100644
--- a/WallpaperPicker/AndroidManifest.xml
+++ b/WallpaperPicker/AndroidManifest.xml
@@ -4,7 +4,7 @@
         android:versionCode="1"
         android:versionName="1.0"
         >
-  
-    <uses-sdk android:minSdkVersion="15" android:targetSdkVersion="19" />
+
+    <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="21" />
     <application/>
 </manifest>
diff --git a/WallpaperPicker/src/com/android/photos/views/TiledImageRenderer.java b/WallpaperPicker/src/com/android/photos/views/TiledImageRenderer.java
index c4e493b..b0292e6 100644
--- a/WallpaperPicker/src/com/android/photos/views/TiledImageRenderer.java
+++ b/WallpaperPicker/src/com/android/photos/views/TiledImageRenderer.java
@@ -20,9 +20,9 @@
 import android.graphics.Bitmap;
 import android.graphics.Rect;
 import android.graphics.RectF;
-import android.support.v4.util.LongSparseArray;
 import android.util.DisplayMetrics;
 import android.util.Log;
+import android.util.LongSparseArray;
 import android.util.Pools.Pool;
 import android.util.Pools.SynchronizedPool;
 import android.view.View;