Revert "VendorCM : Add default wallpaper density bucket for hdpi"

This reverts commit 519f716b49aa5ee2a21bf68f08c006c199ae2731.
Revert "VendorCM : Add density bucket for xhdpi"

This reverts commit 3ac2ad5d5cdd13dbb6059787139b27c030bea1c7.