Revert of Re-proc SkBlitRow::Color32 for ARM.

src/opts/SkBlitRow_opts_arm_neon.cpp

Index: src/opts/SkBlitRow_opts_arm_neon.cpp
diff --git a/src/opts/SkBlitRow_opts_arm_neon.cpp b/src/opts/SkBlitRow_opts_arm_neon.cpp
index 93bd8516e31b9e89065d177ca8df248034ad0ecf..4a6514af7f0d431f0c152b7a85c06f41c6479d61 100644
--- a/src/opts/SkBlitRow_opts_arm_neon.cpp
+++ b/src/opts/SkBlitRow_opts_arm_neon.cpp
@@ -1730,20 +1730,3 @@
     NULL
 #endif
 };
-
-#include "Sk4px.h"
-
-void sk_blitrow_color32_arm_neon(SkPMColor* dst, const SkPMColor* src, int count, SkPMColor color) {
-    // Until it becomes a little more reasonable to assume we'll be built with NEON,
-    // we copy our Sk4px implementation of SkBlitRow::Color32 here so it picks up NEON at runtime.
-    unsigned invA = 255 - SkGetPackedA32(color);
-    invA += invA >> 7;
-    SkASSERT(invA < 256);  // Our caller has already handled the alpha == 0 case.
-
-    Sk16h colorHighAndRound = Sk4px(color).widenHi() + Sk16h(128);
-    Sk16b invA_16x(invA);
-
-    Sk4px::MapSrc(count, dst, src, [&](const Sk4px& src4) -> Sk4px {
-        return src4.mulWiden(invA_16x).addNarrowHi(colorHighAndRound);
-    });
-}