remove sse2 functions that also have ssse3

source/planar_functions.cc

Index: source/planar_functions.cc
diff --git a/source/planar_functions.cc b/source/planar_functions.cc
index 2299ab8920a7e030a12f2e61f48e59c7b07930fa..55160df1e8950a860c0ca1a8384125d161a74841 100644
--- a/source/planar_functions.cc
+++ b/source/planar_functions.cc
@@ -237,14 +237,6 @@ void MirrorPlane(const uint8* src_y, int src_stride_y,
     }
   }
 #endif
-#if defined(HAS_MIRRORROW_SSE2)
-  if (TestCpuFlag(kCpuHasSSE2)) {
-    MirrorRow = MirrorRow_Any_SSE2;
-    if (IS_ALIGNED(width, 16)) {
-      MirrorRow = MirrorRow_SSE2;
-    }
-  }
-#endif
 #if defined(HAS_MIRRORROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3)) {
     MirrorRow = MirrorRow_Any_SSSE3;
@@ -541,11 +533,6 @@ ARGBBlendRow GetARGBBlend() {
     return ARGBBlendRow;
   }
 #endif
-#if defined(HAS_ARGBBLENDROW_SSE2)
-  if (TestCpuFlag(kCpuHasSSE2)) {
-    ARGBBlendRow = ARGBBlendRow_SSE2;
-  }
-#endif
 #if defined(HAS_ARGBBLENDROW_NEON)
   if (TestCpuFlag(kCpuHasNEON)) {
     ARGBBlendRow = ARGBBlendRow_NEON;
@@ -1267,14 +1254,6 @@ int ARGBAttenuate(const uint8* src_argb, int src_stride_argb,
     height = 1;
     src_stride_argb = dst_stride_argb = 0;
   }
-#if defined(HAS_ARGBATTENUATEROW_SSE2)
-  if (TestCpuFlag(kCpuHasSSE2)) {
-    ARGBAttenuateRow = ARGBAttenuateRow_Any_SSE2;
-    if (IS_ALIGNED(width, 4)) {
-      ARGBAttenuateRow = ARGBAttenuateRow_SSE2;
-    }
-  }
-#endif
 #if defined(HAS_ARGBATTENUATEROW_SSSE3)
   if (TestCpuFlag(kCpuHasSSSE3)) {
     ARGBAttenuateRow = ARGBAttenuateRow_Any_SSSE3;