[$] Python's experimental JIT to be removed

Python's experimentaljust-in-time (JIT) compiler, which was added to CPython in 2024 for the 3.13release,is on its way out. In June, the Python steering council announcedthat it was pausing work on the JIT in CPython's main branch until there was anaccepted Python EnhancementProposal (PEP) that addressed concerns about maintenance, compatibility, andset clear success metrics as well as a timeline for completion. After creatingPEP836 ("JIT Go Brrr: ThePath to a Supported JIT Compiler for CPython")to try to meet the council's request, and after months of discussion, theJIT maintainers have withdrawn the PEP. For now, it appears that development onthe once-promising project has come to an end.