[issue33842] Remove tarfile.filemode

[INADA Naoki]

New submission from INADA Naoki <songofacandy at gmail.com>:

ref: #14807, ffa1d0b8d53f426f1f9a0d47f25440b8994c4fb0

tarfile.filemode is deprecated since Python 3.3.
And it is not exported by __all__.

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components: Library (Lib)
messages: 319370
nosy: inada.naoki
priority: normal
severity: normal
status: open
title: Remove tarfile.filemode
versions: Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33842>
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