dead links

[phanirithvij]

• remove go-lctree
  • Dead link and 4years+ not much activity and attention
• remove goribot (404)
• remove regatta (404)
• remove gospider (404)
• remove stl (404) (github is outdated 5years)
• change link for https://nominatim.org/release-docs/latest/api/Overview/ (nominatim)
• change link for https://specifications.freedesktop.org/basedir-spec/latest/ (freedesktop)
• remove haveyoudebuggedit / go-patterns
• go-yapla link change https://gitlab.com/adrienK/go-yapla
• remove plinko
• remove sourcegraph references since they removed their repo and became private
• codewithmukesh timeouts (maybe remove check later)
• qvault.io is boot.dev remove links
• kandi.openweaver.com is 5xx
• https://golangflow.io timeout

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