Remove operator== from SkPaint

src/core/SkPaint.cpp

Index: src/core/SkPaint.cpp
diff --git a/src/core/SkPaint.cpp b/src/core/SkPaint.cpp
index 372e68051e76b90b62c0d9c1598cfd30d7ee882c..328836624c861844d54740a7c3f1a909af649984 100644
--- a/src/core/SkPaint.cpp
+++ b/src/core/SkPaint.cpp
@@ -161,15 +161,6 @@ SkPaint& SkPaint::operator=(const SkPaint& src) {
     return *this;
 }
 
-bool operator==(const SkPaint& a, const SkPaint& b) {
-#ifdef SK_BUILD_FOR_ANDROID
-    //assumes that fGenerationID is the last field in the struct
-    return !memcmp(&a, &b, SK_OFFSETOF(SkPaint, fGenerationID));
-#else
-    return !memcmp(&a, &b, sizeof(a));
-#endif
-}
-
 void SkPaint::reset() {
     SkPaint init;