Use standard preference layout for wallpaper picker

Change-Id: I7c76a9af5e64af4ac8641227289a94ab00f923f2
Fix: 37351626
Test: visual

src/com/android/settings/wallpaper/WallpaperTypeSettings.java

@@ -67,7 +67,6 @@ public class WallpaperTypeSettings extends SettingsPreferenceFragment implements
         // Add Preference items for each of the matching activities
         for (ResolveInfo info : rList) {
             Preference pref = new Preference(getPrefContext());
-            pref.setLayoutResource(R.layout.preference_wallpaper_type);
             Intent prefIntent = new Intent(intent);
             prefIntent.setComponent(new ComponentName(
                     info.activityInfo.packageName, info.activityInfo.name));