RFR: 8258465: Headless build fails due to missing X11 headers on linux

[Aleksey Shipilev]

On Fri, 27 Aug 2021 12:46:14 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

> It turned out that JDK-8255785 was incorrectly verified, and headless do indeed need X headers. This fix is a revert (anti-delta) of JDK-8255785.

Looks good! Looks like a trivial reversal.

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Marked as reviewed by shade (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/5278