Clean up SSSE3 and SSE4 stubs.

src/opts/SkBitmapProcState_opts_SSSE3.cpp

Index: src/opts/SkBitmapProcState_opts_SSSE3.cpp
diff --git a/src/opts/SkBitmapProcState_opts_SSSE3.cpp b/src/opts/SkBitmapProcState_opts_SSSE3.cpp
index 17d7da931a7429342a32629be746f3b2774f8245..07b3171c6ac0a3f31ef9c0d284116172192853cc 100644
--- a/src/opts/SkBitmapProcState_opts_SSSE3.cpp
+++ b/src/opts/SkBitmapProcState_opts_SSSE3.cpp
@@ -10,14 +10,6 @@
 #include "SkPaint.h"
 #include "SkUtils.h"
 
-/* With the exception of the compilers that don't support it, we always build the
- * SSSE3 functions and enable the caller to determine SSSE3 support.  However for
- * compilers that do not support SSSE3 we provide a stub implementation.
- */
-#if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3
-
-#include <tmmintrin.h>  // SSSE3
-
 // adding anonymous namespace seemed to force gcc to inline directly the
 // instantiation, instead of creating the functions
 // S32_generic_D32_filter_DX_SSSE3<true> and
@@ -731,31 +723,3 @@ void S32_alpha_D32_filter_DXDY_SSSE3(const SkBitmapProcState& s,
                                      int count, uint32_t* colors) {
     S32_generic_D32_filter_DXDY_SSSE3<true>(s, xy, count, colors);
 }
-
-#else // SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3
-
-void S32_opaque_D32_filter_DX_SSSE3(const SkBitmapProcState& s,
-                                    const uint32_t* xy,
-                                    int count, uint32_t* colors) {
-    sk_throw();
-}
-
-void S32_alpha_D32_filter_DX_SSSE3(const SkBitmapProcState& s,
-                                   const uint32_t* xy,
-                                   int count, uint32_t* colors) {
-    sk_throw();
-}
-
-void S32_opaque_D32_filter_DXDY_SSSE3(const SkBitmapProcState& s,
-                                      const uint32_t* xy,
-                                      int count, uint32_t* colors) {
-    sk_throw();
-}
-
-void S32_alpha_D32_filter_DXDY_SSSE3(const SkBitmapProcState& s,
-                                     const uint32_t* xy,
-                                     int count, uint32_t* colors) {
-    sk_throw();
-}
-
-#endif