bpo-45475: Revert `__iter__` optimization for GzipFile, BZ2File, and LZMAFile. (GH-29016)


This reverts commit d2a8e69c2c605fbaa3656a5f99aa8d295f74c80e.
(cherry picked from commit 0a4c82ddd34a3578684b45b76f49cd289a08740b)

Co-authored-by: Inada Naoki <songofacandy@gmail.com>
4 files changed