finish scrubbing illustrator from svg
previous patch scrubbed illustrator content, but not references to it,
resulting in an invalid svg
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-<svg version="1.1" id="Layer_1" xmlns:x="&ns_extend;" xmlns:i="&ns_ai;" xmlns:graph="&ns_graphs;"
+<svg version="1.1" id="Layer_1"
xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="212.118px"
height="65.883px" viewBox="0 0 212.118 65.883" enable-background="new 0 0 212.118 65.883" xml:space="preserve">
<switch>
- <foreignObject requiredExtensions="&ns_ai;" x="0" y="0" width="1" height="1">
- </foreignObject>
- <g i:extraneous="self">
+ <g>
<g>
<path fill="#545454" d="M50.751,48.727V12.472h7.251v17.547c1.885-2.32,4.544-3.094,7.299-3.094
c6.042,0,10.586,5.269,10.586,11.167S71.344,49.21,65.302,49.21c-2.755,0-5.849-0.87-7.299-3.046v2.562H50.751z M63.078,43.409
