Remove operator== from SkPaint

R=mtklein@google.com, reed@google.com

Author: sglez@google.com

Review URL: https://chromiumcodereview.appspot.com/21949007

git-svn-id: http://skia.googlecode.com/svn/trunk/include@10603 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/core/SkPaint.h b/core/SkPaint.h
index fa0c61e..ac46760 100644
--- a/core/SkPaint.h
+++ b/core/SkPaint.h
@@ -67,11 +67,6 @@
 
     SkPaint& operator=(const SkPaint&);
 
-    SK_API friend bool operator==(const SkPaint& a, const SkPaint& b);
-    friend bool operator!=(const SkPaint& a, const SkPaint& b) {
-        return !(a == b);
-    }
-
     void flatten(SkFlattenableWriteBuffer&) const;
     void unflatten(SkFlattenableReadBuffer&);