remove dead code from SK_SUPPORT_LEGACY_BLITANTIH2V2

src/core/SkBlitter.h

Index: src/core/SkBlitter.h
diff --git a/src/core/SkBlitter.h b/src/core/SkBlitter.h
index 649093770123448b5e85942d7ff850bb9c2101ff..7cf8301a4a8828efc635624fc5cd40a4cc134ef8 100644
--- a/src/core/SkBlitter.h
+++ b/src/core/SkBlitter.h
@@ -18,12 +18,6 @@
 #include "SkShader.h"
 #include "SkSmallAllocator.h"
 
-#ifdef SK_SUPPORT_LEGACY_BLITANTIH2V2
-    #define SK_BLITANTIH2V2_VIRTUAL
-#else
-    #define SK_BLITANTIH2V2_VIRTUAL virtual
-#endif
-
 /** SkBlitter and its subclasses are responsible for actually writing pixels
     into memory. Besides efficiency, they handle clipping and antialiasing.
 */
@@ -60,7 +54,7 @@ public:
     virtual const SkBitmap* justAnOpaqueColor(uint32_t* value);
 
     // (x, y), (x + 1, y)
-    SK_BLITANTIH2V2_VIRTUAL void blitAntiH2(int x, int y, U8CPU a0, U8CPU a1) {
+    virtual void blitAntiH2(int x, int y, U8CPU a0, U8CPU a1) {
         int16_t runs[3];
         uint8_t aa[2];
         
@@ -73,7 +67,7 @@ public:
     }
 
     // (x, y), (x, y + 1)
-    SK_BLITANTIH2V2_VIRTUAL void blitAntiV2(int x, int y, U8CPU a0, U8CPU a1) {
+    virtual void blitAntiV2(int x, int y, U8CPU a0, U8CPU a1) {
         int16_t runs[2];
         uint8_t aa[1];