Revert commit d4e5ec877ca

Revert commit d4e5ec877ca

This commit removes the PYTHON_UTF8 workaround. The problem with setting

  LC_ALL= LANG=C LC_CTYPE=en_US.UTF-8

is that the en_US.UTF-8 locale might not be available. In this case
setting above locales results in build errors even though another UTF-8
locale was originally set [1]. The only stable way of fixing the
encoding problem is by specifying the encoding in Python, like the
previous commit does.

[1] https://bugs.gentoo.org/657766

Signed-off-by: Arfrever Frehtes Taifersar Arahesis <[email protected]>
Signed-off-by: Matthias Maier <[email protected]>
Message-Id: <20180618175958[email protected]>
Reviewed-by: Eduardo Habkost <[email protected]>
Reviewed-by: Eric Blake <[email protected]>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <[email protected]>