- Remove unused imports of xlink.
- Remove comments about which application originally wrote the text file. It's untrue because PyCharm edited it, etc.
- Remove unused IDs.
- Remove unused colours for icons rendered with RecolorImage.
- Remove useless x and y positions on 0, which is the default.
- Remove useless style setting the background to transparent.
- Remove useless whitespace in the path d attribute, and remove the then-useless XML space preserving attribute.
- Remove unused groups.
- Remove unused CSS classes.
Contributes to issue CURA-8342.
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