[3.14] Doc: remove the invalid type variables of typing.TextIO and BinaryIO (GH-142642) (#142643)

They are not generic classes.
(cherry picked from commit fa1ac9070c7525cab69c043ca2259e6d86357fb3)

Co-authored-by: Roman Donchenko <rdonchen@outlook.com>

Miss Islington (bot) committed 4mo ago

e01407683e5942ea8cf6b8c0fb54229b9e94a90a

Parent: ebeb07f

Committed by GitHub <noreply@github.com> on 12/12/2025, 7:26:34 PM