Remove outdated example

The ones in example/external_client are based on the modular build and
are a better example.

Bug: b/343229140
Change-Id: I085e0e75820567ed63436572795ea8ac2d9720ae
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/859128
Commit-Queue: Nathan Sanchez <nathanasanchez@google.com>
Reviewed-by: Nathan Sanchez <nathanasanchez@google.com>
Commit-Queue: Kaylee Lubick <kjlubick@google.com>
Auto-Submit: Kaylee Lubick <kjlubick@google.com>
4 files changed