[issue40939] Remove the old parser

[Petr Viktorin]

Petr Viktorin <encukou at gmail.com> added the comment:

- The removed functions are still listed in the documentation; this is confusing.

- `struct _node` is not very usable in the C API, but what I saw in mod_wsgi was giving gave PyParser_* output to PyNode_Compile. I tried to write porting notes for this usage. It should also help with the "compile to check for syntax errors" case in unbound.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40939>
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