Remove split code.
Squashed 'Substructio/' content from commit a942cc0

git-subtree-dir: Substructio
git-subtree-split: a942cc020742811f24b3a5e2e12307a0b4aaaf0c
Merge commit '16bb2d8bf78635afdee76e0f7421a673853ba361' as 'Substructio'