[PRQ#48412] Deletion Request for java18-openjdk

MarsSeed [1] filed a deletion request for java18-openjdk [2]: Cleanup of JDK 18 short-term support packages. JDK 18 is EOL since Sep 2022; not even security patches get delivered. User should migrate to a newer JDK/JRE. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/java18-openjdk/