unknown-horizons is marked for autoremoval from testing

[Debian testing autoremoval watch]

unknown-horizons 2019.1-4 is marked for autoremoval from testing on 2022-07-29

It is affected by these RC bugs:
1014084: unknown-horizons: Crashes with "AttributeError: module 'collections' has no attribute 'Iterable'"
 https://bugs.debian.org/1014084



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https://salsa.debian.org/release-team/release-tools/-/blob/master/mailer/mail_autoremovals.pl

Autoremoval data is generated by:
https://salsa.debian.org/qa/udd/-/blob/master/udd/testing_autoremovals_gatherer.pl