xkcd style passwords no longer support German

[dotcs]

Summary

With the changes introduced in #2187, xkcd-style passwords can no longer be created with the German language. Those changes were part of the 1.14.1 release.

Steps To Reproduce

With gopass v1.14.1:

$ gopass pwgen --help
[...]
   --lang value, --xkcdlang value, --xl value  Language to generate password from, currently de (german) and en (english, default) are supported (default: "en")
[...]

$ ./gopass pwgen --xkcd --xl de
2022/05/17 14:30:22 failed to use wordlist for lang de: language "de" has no matching wordlist

Expected behavior

Since the support for German language has been dropped on purpose, the cli help and autocompletion should no longer show them.

Environment

• OS: Linux
• OS version: Linux 5.15.32-1-MANJARO #_1 SMP PREEMPT Mon Mar 28 09:16:36 UTC 2022 x86_64 GNU/Linux
• gopass Version: 1.14.1
• Installation method: from source