They are broken, and we now have extensive build coverage through
Kokoro.

Bug: b/115784742
Change-Id: Id08da60aa4d361ece17f4bdc1a1b4ceacf7a94a8
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/46588
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>