fukawi2: remove from forum@

I am stepping down as Forum Administrator.

Please remove me from the forum@ service desk in GitLab.

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All roles checklist

• Remove user email by reverting instructions from docs/email.md.
  • Setup forwarding if desired (please add the current date as a comment above the mail address in Postfix's users file).
  • Inform the user of the conditions for forwarding.
    • In most cases we only offer forwarding for 6 months.
    • We will inform the user prior to disabling the forwarding.
    • The forwarding can be extended if there are good reasons for doing so.
• Set user to inactive in archweb: https://www.archlinux.org/admin/auth/user/ (still Active but moved to Retired Support Staff
• Remove member from staff mailing list
• Ask the user to leave #archlinux-staff on Libera Chat and forget the password
• Remove staff cloak on Libera Chat (Group contacts)