[jfx17] Integrated: 8271230: Remove obsolete test classes and data files from 3DViewer sample

[Kevin Rushforth]

On Sat, 24 Jul 2021 12:45:04 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> Remove the obsolete `apps/samples/3DViewer/src/test` directory from the 3DViewer sample, including two test classes that don't run and a set of data files that won't load. This is a follow-on cleanup bug to [JDK-8269259](https://bugs.openjdk.java.net/browse/JDK-8269259).
> 
> NOTE: this is targeted to `jfx17`.

This pull request has now been integrated.

Changeset: 0e5b7887
Author:    Kevin Rushforth <kcr at openjdk.org>
URL:       https://git.openjdk.java.net/jfx/commit/0e5b7887075e8cbe4d2b332c9021ec997f567ed7
Stats:     7167 lines in 16 files changed: 0 ins; 7167 del; 0 mod

8271230: Remove obsolete test classes and data files from 3DViewer sample

Reviewed-by: arapte, pbansal

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PR: https://git.openjdk.java.net/jfx/pull/587