Revert "mkarchiso: unset LANGUAGE"

Starting with glibc 2.39, LC_ALL=C.UTF-8 overrides LANGUAGE, just like
LC_ALL=C. See https://sourceware.org/bugzilla/show_bug.cgi?id=16621 for
details.

This reverts commit 6ac22309530f3aa07a2b638ccde419a3a509f50c.

1 files changed, 2 insertions, 0 deletions

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 148a9df..493a990 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -22,6 +22,8 @@ Fixed
 Removed
 -------
 
+- Remove workaround for glibc < 2.39. ``LC_ALL=C.UTF-8`` now overrides ``LANGUAGE``, just like ``LC_ALL=C``.
+
 [75] - 2024-01-24
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