These are unused by the Vulkan implementation. We have sw::float4
instead for vector data type needs.

Bug: b/146224130
Change-Id: Icbb01e3ea82b760ad60f99c10e65c38e825ef12d
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/39688
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>