Remove asdl (#21)

This removes the ASDL code generation in favor of handwriting the AST. The motivations for moving away from the ASDL are: * CPython compatibility is no longer a goal * The ASDL grammar isn't as expressive as we would like * The codegen scripts have a high complexity which makes extensions time consuming * We don't make heavy use of code generation (compared to e.g. RustPython that generates Pyo3 bindings, a fold implementation etc). We may want to revisit a grammar based code generation in the future, e.g. by using [ungrammar](https://github.com/rust-analyzer/ungrammar)
astral-sh · Jul 5, 2023 · 2d1f69c · 2d1f69c
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diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
@@ -73,4 +73,3 @@ jobs:
             'core/**/*.rs'
             'literal/**/*.rs'
             'parser/**/*.rs'
-            'ast/asdl_rs.py'
diff --git a/ast/Python.asdl b/ast/Python.asdl