Suppress unused parameter warnings

Change-Id: Ibb3fc68726fbea174ce1c499bcca2a9b6cfbfd5d
Reviewed-on: https://swiftshader-review.googlesource.com/3149
Reviewed-by: Nicolas Capens <capn@google.com>
Tested-by: Greg Hartman <ghartman@google.com>
5 files changed