Remove unwanted metadata from SVG files. (Closes: #956102)

homeworld-theme/source/plymouth/debian_bulleyes_plymouth_bg.svg

@@ -17,7 +17,6 @@
    enable-background="new 0 0 2560 2052"
    xml:space="preserve"
    sodipodi:docname="debian_bulleyes_plymouth_bg.svg"
-   inkscape:export-filename="/tmp/plymouth_background_homeworld.png"
    inkscape:export-xdpi="72"
    inkscape:export-ydpi="72"
    inkscape:version="1.0.2 (e86c870879, 2021-01-15)"><metadata

homeworld-theme/source/plymouth/logo.svg

@@ -19,7 +19,6 @@
    xml:space="preserve"
    sodipodi:docname="logo.svg"
    inkscape:version="1.0.2 (e86c870879, 2021-01-15)"
-   inkscape:export-filename="/tmp/logo.png"
    inkscape:export-xdpi="96"
    inkscape:export-ydpi="96"><metadata
      id="metadata10"><rdf:RDF><cc:Work
@@ -63,7 +62,6 @@
      style="fill:#32b2a7;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:9.99998;stroke-linecap:square;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1;paint-order:normal" /><g
      inkscape:export-ydpi="96"
      inkscape:export-xdpi="96"
-     inkscape:export-filename="C:\Users\xine\Documents\2018-debian-buster\futurePrototype-source\desktop-wallpaper\png\wallpaper-4096x2160.png"
      transform="matrix(1.8539199,0,0,1.8539199,953.0737,104.96348)"
      id="g1007"
      style="display:inline;overflow:visible;fill:#ffffff;fill-opacity:1;stroke-width:4.97374"><g