Remove mention of IPv6 from design doc

See merge request tails/tails!612

wiki/src/doc/anonymous_internet/tor.ar.po: updating as wiki/src/doc/anonymous_internet/tor.de.po has changed.
wiki/src/doc/anonymous_internet/tor.ca.po: updating as wiki/src/doc/anonymous_internet/tor.de.po has changed.
wiki/src/doc/anonymous_internet/tor.fa.po: updating as wiki/src/doc/anonymous_internet/tor.de.po has changed.
wiki/src/doc/anonymous_internet/tor.id.po: updating as wiki/src/doc/anonymous_internet/tor.de.po has changed.
wiki/src/doc/anonymous_internet/tor.pl.po: updating as wiki/src/doc/anonymous_internet/tor.de.po has changed.
wiki/src/doc/anonymous_internet/tor.sr_Latn.po: updating as wiki/src/doc/anonymous_internet/tor.de.po has changed.
wiki/src/doc/anonymous_internet/tor.tr.po: updating as wiki/src/doc/anonymous_internet/tor.de.po has changed.
wiki/src/doc/anonymous_internet/tor.zh.po: updating as wiki/src/doc/anonymous_internet/tor.de.po has changed.
wiki/src/doc/anonymous_internet/tor.zh_TW.po: updating as wiki/src/doc/anonymous_internet/tor.de.po has changed.
wiki/src/press.ar.po: updating as wiki/src/press.de.po has changed.
wiki/src/press.ca.po: updating as wiki/src/press.de.po has changed.
wiki/src/press.fa.po: updating as wiki/src/press.de.po has changed.
wiki/src/press.id.po: updating as wiki/src/press.de.po has changed.
wiki/src/press.pl.po: updating as wiki/src/press.de.po has changed.
wiki/src/press.sr_Latn.po: updating as wiki/src/press.de.po has changed.
wiki/src/press.tr.po: updating as wiki/src/press.de.po has changed.
wiki/src/press.zh.po: updating as wiki/src/press.de.po has changed.
wiki/src/press.zh_TW.po: updating as wiki/src/press.de.po has changed.

Currently translated at 68.9% (20 of 29 strings)

Translation: Tails/wiki/src/news/version_4.23.*.po
Translate-URL: https://translate.tails.boum.org/projects/tails/wikisrcnewsversion_423po/fr/

Currently translated at 37.5% (3 of 8 strings)

Translation: Tails/wiki/src/security/known_security_vulnerabilities_in_4.22.*.po
Translate-URL: https://translate.tails.boum.org/projects/tails/wikisrcsecurityknown_security_vulnerabilities_in_422po/fr/

Currently translated at 24.1% (7 of 29 strings)

Translation: Tails/wiki/src/news/version_4.23.*.po
Translate-URL: https://translate.tails.boum.org/projects/tails/wikisrcnewsversion_423po/fr/

Currently translated at 12.5% (1 of 8 strings)

Translation: Tails/wiki/src/security/known_security_vulnerabilities_in_4.22.*.po
Translate-URL: https://translate.tails.boum.org/projects/tails/wikisrcsecurityknown_security_vulnerabilities_in_422po/fr/

wiki/src/news/version_4.23.ar.po: adding as wiki/src/news/version_4.23.de.po has added.
wiki/src/news/version_4.23.ca.po: adding as wiki/src/news/version_4.23.de.po has added.
wiki/src/news/version_4.23.fa.po: adding as wiki/src/news/version_4.23.de.po has added.
wiki/src/news/version_4.23.id.po: adding as wiki/src/news/version_4.23.de.po has added.
wiki/src/news/version_4.23.pl.po: adding as wiki/src/news/version_4.23.de.po has added.
wiki/src/news/version_4.23.sr_Latn.po: adding as wiki/src/news/version_4.23.de.po has added.
wiki/src/news/version_4.23.tr.po: adding as wiki/src/news/version_4.23.de.po has added.
wiki/src/news/version_4.23.zh.po: adding as wiki/src/news/version_4.23.de.po has added.
wiki/src/news/version_4.23.zh_TW.po: adding as wiki/src/news/version_4.23.de.po has added.
wiki/src/security/known_security_vulnerabilities_in_4.22.ar.po: adding as wiki/src/security/known_security_vulnerabilities_in_4.22.de.po has added.
wiki/src/security/known_security_vulnerabilities_in_4.22.ca.po: adding as wiki/src/security/known_security_vulnerabilities_in_4.22.de.po has added.
wiki/src/security/known_security_vulnerabilities_in_4.22.fa.po: adding as wiki/src/security/known_security_vulnerabilities_in_4.22.de.po has added.
wiki/src/security/known_security_vulnerabilities_in_4.22.id.po: adding as wiki/src/security/known_security_vulnerabilities_in_4.22.de.po has added.
wiki/src/security/known_security_vulnerabilities_in_4.22.pl.po: adding as wiki/src/security/known_security_vulnerabilities_in_4.22.de.po has added.
wiki/src/security/known_security_vulnerabilities_in_4.22.sr_Latn.po: adding as wiki/src/security/known_security_vulnerabilities_in_4.22.de.po has added.
wiki/src/security/known_security_vulnerabilities_in_4.22.tr.po: adding as wiki/src/security/known_security_vulnerabilities_in_4.22.de.po has added.
wiki/src/security/known_security_vulnerabilities_in_4.22.zh.po: adding as wiki/src/security/known_security_vulnerabilities_in_4.22.de.po has added.
wiki/src/security/known_security_vulnerabilities_in_4.22.zh_TW.po: adding as wiki/src/security/known_security_vulnerabilities_in_4.22.de.po has added.

Currently translated at 6.1% (6 of 97 strings)

Currently translated at 36.3% (4 of 11 strings)

Translation: Tails/wiki/src/doc/encryption_and_privacy/luks_vs_veracrypt.inline.*.po
Translate-URL: https://translate.tails.boum.org/projects/tails/wikisrcdocencryption_and_privacyluks_vs_veracryptinlinepo/pt/

Currently translated at 36.3% (4 of 11 strings)

Translation: Tails/wiki/src/doc/encryption_and_privacy/luks_vs_veracrypt.inline.*.po
Translate-URL: https://translate.tails.boum.org/projects/tails/wikisrcdocencryption_and_privacyluks_vs_veracryptinlinepo/pt/

Currently translated at 27.2% (3 of 11 strings)

Translation: Tails/wiki/src/doc/encryption_and_privacy/luks_vs_veracrypt.inline.*.po
Translate-URL: https://translate.tails.boum.org/projects/tails/wikisrcdocencryption_and_privacyluks_vs_veracryptinlinepo/pt/

Currently translated at 18.1% (2 of 11 strings)

Translation: Tails/wiki/src/doc/encryption_and_privacy/luks_vs_veracrypt.inline.*.po
Translate-URL: https://translate.tails.boum.org/projects/tails/wikisrcdocencryption_and_privacyluks_vs_veracryptinlinepo/pt/

Currently translated at 74.0% (20 of 27 strings)

Translation: Tails/wiki/src/doc/about/social_contract.*.po
Translate-URL: https://translate.tails.boum.org/projects/tails/wikisrcdocaboutsocial_contractpo/pt/

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