Revert of Add flipped gradient branch to two point conical gradient

src/effects/gradients/SkGradientShaderPriv.h

Index: src/effects/gradients/SkGradientShaderPriv.h
diff --git a/src/effects/gradients/SkGradientShaderPriv.h b/src/effects/gradients/SkGradientShaderPriv.h
index f4f53dee25a4611d07b84176bce8def9436913c8..1d0f008917d42d974c393d3fb4c31dbd580d8572 100644
--- a/src/effects/gradients/SkGradientShaderPriv.h
+++ b/src/effects/gradients/SkGradientShaderPriv.h
@@ -204,11 +204,6 @@
     Rec*        fRecs;
 
     void commonAsAGradient(GradientInfo*) const;
-
-    // V23_COMPATIBILITY_CODE
-    // Used for 2-pt conical gradients since we sort start/end cirlces by radius
-    // Assumes space has already been allocated for fOrigColors
-    void flipGradientColors();
 
 private:
     enum {