Clean up SSSE3 and SSE4 stubs.
We added these stubs to work around OpenBSD's old compiler, which had
support for SSE2 but not SSSE3 or SSE4.
We now already have other unstubbed files that require SSSE3 and SSE4 compiler
support. All the compilers we support have SSSE3 and SSE4 support, and all the
way up to at least AVX2.
(Requiring C++11 has had some nice ripple effects...)
And, <immintrin.h> is already auto-included for these files, so no need for smmintrin or tmmintrin.
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1810183003
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
Review URL: https://codereview.chromium.org/1810183003
2 files changed