i18n(de): remove very outdated translation [i18nIgnore]

[trueberryless]

Description

Cleaning up the German translation for the v6 release by deleting one file which was very outdated.

Related: #13213

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Tracked Files

File	Note
de/basics/astro-components.mdx	Localization changed, will be marked as complete.
de/reference/astro-syntax.mdx	Localization removed, will be marked as missing.
de/tutorial/2-pages/3.mdx	Localization changed, will be marked as complete.
de/tutorial/2-pages/4.mdx	Localization changed, will be marked as complete.
de/tutorial/2-pages/5.mdx	Localization changed, will be marked as complete.

Warnings reference

Icon	Description
🔄️	The source for this localization has been updated since the creation of this pull request, make sure all changes in the source have been applied.

[sarah11918]

Thank you for making the tough calls! 🫡 To keep things in sync, can you please also make a v5 PR to avoid any conflicts?

[trueberryless]

Thank you for making the tough calls! 🫡 To keep things in sync, can you please also make a v5 PR to avoid any conflicts?

Thank you. There are some other files that are outdated, but I checked each one and they all just have smaller fixes or changes which would not harm the user experience as badly as this one.

I also fixed the broken link fragments in both PRs. Thanks for reminding me about the v5, I would have forgotten!