This extension is believed to be unused.

Bug: b/147536183
Change-Id: Ifaa1e560414e93f2d1382d7d83c335dda9370eee
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/40110Tested-by: Nicolas Capens <nicolascapens@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>