openjdk: build-only unzip/zip

[cho-m]

Looking at Linux distros, unzip/zip doesn't seem needed at runtime (or at least not important enough as not in any required/recommended/suggested dependencies lists).

• cups, fontconfig and libxrandr are dlopen-ed (though OpenJDK probably still works if not using corresponding feature but can keep runtime dep).
• Not too sure on libxt. It is needed to build due to X11 header but can't find library usage. Maybe needed when running X11 but isn't included in dependency list of Arch Linux / Fedora

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