- redefined with DEFINE
- redefined with TO
- erased with ERASE
- overwritten with COPYDEF
The problem is that these workspace procedures all untreeified the previous procedure.
This was historically needed because the tree had a circular reference and changing
the case object's procnode while it still had a tree would leak the tree. However,
the evalulator can't handle when a running procedure is untreeified and the generation
changes, as this sets the tree of bodylist to NIL, and the evaluator can't re-treeify NIL.
A recent change reworked the structure of a tree to no longer creates circular references.
Therefore, explicit untreeifying is no longer needed, so that logic could all be removed.
This is a rare fix where the fix is entirely done by removing code.
