Remove VisualizationWallpapers as it does not comply with API 23 rules

Change-Id: I3b7d643bdda1f5db0bcb835fa98614f166a48722
Reference: https://android.googlesource.com/device/asus/flo/+/1bde1e17aa8fbe9ec905a55fe3be7a106eda9d82%5E%21/#F0
diff --git a/default.xml b/default.xml
index e21f73f..50cf399 100644
--- a/default.xml
+++ b/default.xml
@@ -280,7 +280,6 @@
   <project path="packages/wallpapers/HoloSpiral" name="CyanogenMod/android_packages_wallpapers_HoloSpiral" />
   <project path="packages/wallpapers/LivePicker" name="CyanogenMod/android_packages_wallpapers_LivePicker" />
   <project path="packages/wallpapers/MagicSmoke" name="CyanogenMod/android_packages_wallpapers_MagicSmoke" />
-  <project path="packages/wallpapers/MusicVisualization" name="CyanogenMod/android_packages_wallpapers_MusicVisualization" />
   <project path="packages/wallpapers/NoiseField" name="CyanogenMod/android_packages_wallpapers_NoiseField" />
   <project path="packages/wallpapers/PhaseBeam" name="CyanogenMod/android_packages_wallpapers_PhaseBeam" />
   <project path="packages/wallpapers/PhotoPhase" name="CyanogenMod/android_packages_wallpapers_PhotoPhase" />