remove comments why a file gets included

also remove some commented out code

Change-Id: Ia80c5c57d8d2a74418032de50eee95642cc0969d

path: root/icon-themes/sifr_svg/cmd/lc_symbolshapes.diamond-bevel.svg

<svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><g fill="#2e3436"><path d="m12 2-10 10 10 10 10-10zm-1 3v4l-2 2h-4zm2 0 6 6h-4l-2-2zm-8 8h4l2 2v4zm10 0h4l-6 6v-4z"/><path d="m12 4-8 8 8 8 8-8z" opacity=".35"/></g></svg>