remove also software/unstable/zimbra-kvm which were still referencing
those recipes

using https://github.com/matomo-org/matomo/pull/13676

This repairs a NameError introduced in 397726e1 (erp5/neoppod/slapos:
Support for python3 from aurel/zope4 branch., 2022-02-03) that was
causing ERP5-IOS test suite to fail in loop.

a binary make use of it and do not any more download a binary. Instead
compile on the fly.

Nettle has hard dependency on openssl, and --disable-openssl is only
disabling optional feature of it.

we have implemented this in ERP5 repository

This reverts commit 054386d6.

It proven to be insufficient to fix issues with PYTHON make variable
surcharging from top make.