logo: Simplify and square off white source svg

+ rename (to group with the coloured one)
 + drop pre-rendered version

logo/nix-snowflake-white.svg

@@ -1,23 +1,23 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:xlink="http://www.w3.org/1999/xlink"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
    inkscape:export-ydpi="600"
    inkscape:export-xdpi="600"
    inkscape:export-filename="/Users/samuel/Projects/nixos/nixos-artwork/logo/white.png"
    sodipodi:docname="white.svg"
-   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
+   inkscape:version="1.3.2 (091e20ef0f, 2023-11-25)"
    version="1.1"
    id="svg2"
-   viewBox="0 0 501.56252 435.00001"
-   height="464"
-   width="535">
+   viewBox="0 0 501.56252 501.56251"
+   height="535"
+   width="535"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:dc="http://purl.org/dc/elements/1.1/">
   <defs
      id="defs4">
     <linearGradient
@@ -69,22 +69,23 @@
      fit-margin-top="0"
      inkscape:snap-global="true"
      inkscape:window-maximized="1"
-     inkscape:window-y="605"
-     inkscape:window-x="1680"
-     inkscape:window-height="1407"
-     inkscape:window-width="2556"
+     inkscape:window-y="30"
+     inkscape:window-x="1920"
+     inkscape:window-height="1050"
+     inkscape:window-width="1920"
      showgrid="false"
-     inkscape:current-layer="layer1"
+     inkscape:current-layer="layer3"
      inkscape:document-units="px"
-     inkscape:cy="474.733"
-     inkscape:cx="19.850892"
+     inkscape:cy="474.1579"
+     inkscape:cx="21"
      inkscape:zoom="0.45238095"
      inkscape:pageshadow="2"
      inkscape:pageopacity="1"
      borderopacity="1.0"
      bordercolor="#666666"
      pagecolor="#000000"
-     id="base" />
+     id="base"
+     inkscape:deskcolor="#d1d1d1" />
   <metadata
      id="metadata7">
     <rdf:RDF>
@@ -93,26 +94,10 @@
         <dc:format>image/svg+xml</dc:format>
         <dc:type
            rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
       </cc:Work>
     </rdf:RDF>
   </metadata>
   <g
-     style="display:none"
-     transform="matrix(0.09048806,0,0,0.09048806,-14.15991,84.454917)"
-     inkscape:label="(pdf) background"
-     id="layer1"
-     inkscape:groupmode="layer">
-    <rect
-       y="-2102.4253"
-       x="-1045.6049"
-       height="7145.4614"
-       width="7947.0356"
-       id="rect995"
-       style="opacity:1;fill:#040404;fill-opacity:1;stroke-width:10.3605" />
-  </g>
-  <g
-     sodipodi:insensitive="true"
      transform="translate(-156.48372,537.56136)"
      style="display:inline;opacity:1"
      inkscape:label="gradient-logo"
@@ -120,7 +105,7 @@
      inkscape:groupmode="layer">
     <g
        style="stroke-width:11.0512"
-       transform="matrix(0.09048806,0,0,0.09048806,142.32381,-453.10644)"
+       transform="matrix(0.09048806,0,0,0.09048806,142.32381,-419.8252)"
        id="g955">
       <g
          transform="matrix(11.047619,0,0,11.047619,-1572.2888,9377.7107)"