Convert SVGs with embedded png into proper SVG

assets/layers/drinking_water/drips.svg

@@ -5,12 +5,30 @@
    viewBox="0 0 499.99999 500"
    version="1.1"
    id="svg29"
-   xmlns:xlink="http://www.w3.org/1999/xlink"
+   sodipodi:docname="drips.svg"
+   inkscape:version="1.1.1 (1:1.1+202109281949+c3084ef5ed)"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
    xmlns="http://www.w3.org/2000/svg"
    xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs9" />
+  <sodipodi:namedview
+     id="namedview7"
+     pagecolor="#505050"
+     bordercolor="#eeeeee"
+     borderopacity="1"
+     inkscape:pageshadow="0"
+     inkscape:pageopacity="0"
+     inkscape:pagecheckerboard="0"
+     showgrid="false"
+     inkscape:zoom="0.77013483"
+     inkscape:cx="138.93671"
+     inkscape:cy="44.148114"
+     inkscape:current-layer="svg29" />
   <g
      id="surface1"
-     transform="translate(-41.925407,-49.848108)">
+     transform="matrix(0.64131719,0,0,0.64131719,63.670174,26.053743)">
     <path
        id="path2491"
        style="fill:none;fill-opacity:1;stroke:#ffffff;stroke-width:25;stroke-linecap:butt;stroke-linejoin:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"