RFR: 8256978: GitHub actions: build fails on Linux due to missing package

Tue Nov 24 16:00:04 UTC 2020

On Tue, 24 Nov 2020 15:55:07 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> This is a simple fix to remove and unused package from the list of packages we specify to install on Linux when running GitHub actions.
> 
> As a follow-on fix, I am going to do what the JDK did and specify the version of each OS to use to partially insulate us from such changes in the GitHub actions defaults.

@arapte Can you review this?

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PR: https://git.openjdk.java.net/jfx/pull/359