Remove SK_SUPPORT_LEGACY_DEEPFLATTENING.

src/effects/SkDiscretePathEffect.cpp

Index: src/effects/SkDiscretePathEffect.cpp
diff --git a/src/effects/SkDiscretePathEffect.cpp b/src/effects/SkDiscretePathEffect.cpp
index e8cc6a2f7032c779b6315d018247328104a5cf17..8aa0e223562d39a28c9f8a1a29c38dbfb31f4e85 100644
--- a/src/effects/SkDiscretePathEffect.cpp
+++ b/src/effects/SkDiscretePathEffect.cpp
@@ -87,12 +87,3 @@ void SkDiscretePathEffect::flatten(SkWriteBuffer& buffer) const {
     buffer.writeScalar(fPerterb);
     buffer.writeUInt(fSeedAssist);
 }
-
-#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
-SkDiscretePathEffect::SkDiscretePathEffect(SkReadBuffer& buffer) {
-    fSegLength = buffer.readScalar();
-    fPerterb = buffer.readScalar();
-    fSeedAssist = buffer.readUInt();
-}
-#endif
-