Back out "Enable using python3.12 at build time (#957)"

Original commit changeset: 4a1d4f6

Author: stepancheg

eden/scm/contrib/pick_python.py

@@ -38,7 +38,6 @@ def main(args):
         + [
             p + EXE
             for p in [
-                "python3.12",
                 "python3.11",
                 "python3.10",
                 "python3.9",