Delete the C++ bytecode code generator, now that all compilation goes
through the Rust pipeline:
- Bytecode/ASTCodegen.cpp (4417 lines)
- Bytecode/Generator.cpp (1961 lines)
- Bytecode/Generator.h (535 lines)
- Bytecode/ScopedOperand.cpp (23 lines)
Also remove all generate_bytecode() and generate_labelled_evaluation()
virtual method declarations from AST.h, and their associated Bytecode
includes.
c25227d324