Removing Adobe Illustrator cruft from an SVG

1. Open the file in Inkscape
2. Edit -> XML Editor…
3. Find and open the <switch> node
4. Highlight and delete (in XML Edit window’s toolbar) the foreignObject node
5. Highlight the <switch> node
6. Object -> Ungroup (in the main Inkscape window)
7. Highlight and delete the <i:pgf> node