[PRQ#65873] Deletion Request for web-greeter-theme-shikai

Wisker [1] filed a deletion request for web-greeter-theme-shikai [2]: The package was moved to [shikai- theme](https://aur.archlinux.org/packages/shikai-theme) as it now supports different greeters, not only web-greeter [1] https://aur.archlinux.org/account/Wisker/ [2] https://aur.archlinux.org/pkgbase/web-greeter-theme-shikai/